[{"data":1,"prerenderedAt":615},["ShallowReactive",2],{"guide-percentage-change-vs-percentage-point":3},{"id":4,"title":5,"body":6,"date":607,"description":608,"extension":609,"meta":610,"navigation":519,"path":611,"readingTime":492,"seo":612,"stem":613,"__hash__":614},"guides\u002Fguides\u002Fpercentage-change-vs-percentage-point.md","Percentage Change vs Percentage Point",{"type":7,"value":8,"toc":591},"minimark",[9,14,18,22,25,36,43,49,56,60,63,69,74,80,86,90,178,181,185,190,193,232,235,239,242,252,255,259,262,270,273,277,327,330,334,386,390,553,557,574,578,587],[10,11,13],"h2",{"id":12},"the-confusion-that-costs-money","The Confusion That Costs Money",[15,16,17],"p",{},"A news headline reads: \"Interest rates rose 2%.\" Does that mean the rate went from 5% to 5.1% (a 2% increase of 5), or from 5% to 7% (a 2 percentage point increase)? These are dramatically different outcomes, and confusing them causes real financial and policy errors.",[10,19,21],{"id":20},"percentage-change","Percentage Change",[15,23,24],{},"Percentage change measures the relative difference between an old value and a new value, expressed as a proportion of the old value.",[26,27,32],"pre",{"className":28,"code":30,"language":31},[29],"language-text","Percentage change = ((New - Old) \u002F Old) × 100\n","text",[33,34,30],"code",{"__ignoreMap":35},"",[15,37,38,42],{},[39,40,41],"strong",{},"Example",": Interest rates rise from 5% to 7%.",[26,44,47],{"className":45,"code":46,"language":31},[29],"Percentage change = ((7 - 5) \u002F 5) × 100 = 40%\n",[33,48,46],{"__ignoreMap":35},[15,50,51,52,55],{},"The rate increased by ",[39,53,54],{},"40%"," relative to where it started.",[10,57,59],{"id":58},"percentage-point-change","Percentage Point Change",[15,61,62],{},"Percentage point change is the simple arithmetic difference between two percentages.",[26,64,67],{"className":65,"code":66,"language":31},[29],"Percentage point change = New percentage - Old percentage\n",[33,68,66],{"__ignoreMap":35},[15,70,71,42],{},[39,72,73],{},"Same example",[26,75,78],{"className":76,"code":77,"language":31},[29],"Percentage point change = 7 - 5 = 2 percentage points\n",[33,79,77],{"__ignoreMap":35},[15,81,51,82,85],{},[39,83,84],{},"2 percentage points",".",[10,87,89],{"id":88},"side-by-side-comparison","Side-by-Side Comparison",[91,92,93,110],"table",{},[94,95,96],"thead",{},[97,98,99,103,106,108],"tr",{},[100,101,102],"th",{},"Starting Rate",[100,104,105],{},"New Rate",[100,107,21],{},[100,109,59],{},[111,112,113,127,140,153,166],"tbody",{},[97,114,115,119,122,124],{},[116,117,118],"td",{},"5%",[116,120,121],{},"7%",[116,123,54],{},[116,125,126],{},"2 pp",[97,128,129,132,135,138],{},[116,130,131],{},"10%",[116,133,134],{},"12%",[116,136,137],{},"20%",[116,139,126],{},[97,141,142,145,148,151],{},[116,143,144],{},"50%",[116,146,147],{},"52%",[116,149,150],{},"4%",[116,152,126],{},[97,154,155,158,161,164],{},[116,156,157],{},"1%",[116,159,160],{},"3%",[116,162,163],{},"200%",[116,165,126],{},[97,167,168,170,172,175],{},[116,169,137],{},[116,171,131],{},[116,173,174],{},"-50%",[116,176,177],{},"-10 pp",[15,179,180],{},"Notice: the same 2 percentage point increase produces wildly different percentage changes depending on the starting value. A jump from 1% to 3% is a 200% increase — triple the original rate.",[10,182,184],{"id":183},"where-the-distinction-matters","Where the Distinction Matters",[186,187,189],"h3",{"id":188},"finance","Finance",[15,191,192],{},"A mortgage rate moving from 3% to 4% is a 33% increase in your interest cost — not just \"1% more.\" On a $400,000 loan over 30 years:",[91,194,195,208],{},[94,196,197],{},[97,198,199,202,205],{},[100,200,201],{},"Rate",[100,203,204],{},"Monthly Payment",[100,206,207],{},"Total Interest",[111,209,210,221],{},[97,211,212,215,218],{},[116,213,214],{},"3.0%",[116,216,217],{},"$1,686",[116,219,220],{},"$207,109",[97,222,223,226,229],{},[116,224,225],{},"4.0%",[116,227,228],{},"$1,910",[116,230,231],{},"$287,478",[15,233,234],{},"That 1 percentage point increase costs $80,369 more in interest — a 39% increase in total interest paid.",[186,236,238],{"id":237},"elections","Elections",[15,240,241],{},"\"Support for the candidate increased 5%\" is ambiguous. If support went from 40% to 45%, that is:",[243,244,245,249],"ul",{},[246,247,248],"li",{},"5 percentage points (the poll literally moved 5 points)",[246,250,251],{},"12.5% increase relative to the original 40%",[15,253,254],{},"Political analysts use percentage points. So should you.",[186,256,258],{"id":257},"health-statistics","Health Statistics",[15,260,261],{},"Vaccination coverage rising from 60% to 75% is:",[243,263,264,267],{},[246,265,266],{},"15 percentage points more of the population",[246,268,269],{},"25% increase in coverage",[15,271,272],{},"The first number tells you the population impact. The second tells you the relative improvement.",[10,274,276],{"id":275},"common-errors-in-reporting","Common Errors in Reporting",[91,278,279,292],{},[94,280,281],{},[97,282,283,286,289],{},[100,284,285],{},"Incorrect Phrasing",[100,287,288],{},"What It Implies",[100,290,291],{},"What Was Probably Meant",[111,293,294,305,316],{},[97,295,296,299,302],{},[116,297,298],{},"\"Unemployment rose 2%\"",[116,300,301],{},"From 5% to 5.1%",[116,303,304],{},"From 5% to 7% (2 pp)",[97,306,307,310,313],{},[116,308,309],{},"\"Tax rate increased 3%\"",[116,311,312],{},"From 20% to 20.6%",[116,314,315],{},"From 20% to 23% (3 pp)",[97,317,318,321,324],{},[116,319,320],{},"\"Market share grew 10%\"",[116,322,323],{},"From 30% to 33%",[116,325,326],{},"From 30% to 40% (10 pp)",[15,328,329],{},"Journalists and marketers routinely make this error. When you read a percentage headline, always ask: \"Percentage of what?\"",[10,331,333],{"id":332},"quick-reference-rules","Quick Reference Rules",[91,335,336,346],{},[94,337,338],{},[97,339,340,343],{},[100,341,342],{},"Situation",[100,344,345],{},"Use",[111,347,348,356,364,371,378],{},[97,349,350,353],{},[116,351,352],{},"Comparing two rates or percentages",[116,354,355],{},"Percentage points",[97,357,358,361],{},[116,359,360],{},"Measuring growth relative to a base",[116,362,363],{},"Percentage change",[97,365,366,369],{},[116,367,368],{},"Interest rates, tax rates, poll numbers",[116,370,355],{},[97,372,373,376],{},[116,374,375],{},"Revenue growth, population growth",[116,377,363],{},[97,379,380,383],{},[116,381,382],{},"Headlines for general audiences",[116,384,385],{},"Say both — \"2 percentage points (a 40% increase)\"",[10,387,389],{"id":388},"calculating-both-in-practice","Calculating Both in Practice",[26,391,395],{"className":392,"code":393,"language":394,"meta":35,"style":35},"language-javascript shiki shiki-themes github-light github-dark","function analyzeChange(oldRate, newRate) {\n  const ppChange = newRate - oldRate;\n  const pctChange = ((newRate - oldRate) \u002F oldRate) * 100;\n  return {\n    percentagePoints: ppChange,\n    percentageChange: pctChange\n  };\n}\n\n\u002F\u002F Interest rate: 5% → 7%\nanalyzeChange(5, 7);\n\u002F\u002F { percentagePoints: 2, percentageChange: 40 }\n","javascript",[33,396,397,427,449,481,490,496,502,508,514,521,528,547],{"__ignoreMap":35},[398,399,402,406,410,414,418,421,424],"span",{"class":400,"line":401},"line",1,[398,403,405],{"class":404},"szBVR","function",[398,407,409],{"class":408},"sScJk"," analyzeChange",[398,411,413],{"class":412},"sVt8B","(",[398,415,417],{"class":416},"s4XuR","oldRate",[398,419,420],{"class":412},", ",[398,422,423],{"class":416},"newRate",[398,425,426],{"class":412},") {\n",[398,428,430,433,437,440,443,446],{"class":400,"line":429},2,[398,431,432],{"class":404},"  const",[398,434,436],{"class":435},"sj4cs"," ppChange",[398,438,439],{"class":404}," =",[398,441,442],{"class":412}," newRate ",[398,444,445],{"class":404},"-",[398,447,448],{"class":412}," oldRate;\n",[398,450,452,454,457,459,462,464,467,470,472,475,478],{"class":400,"line":451},3,[398,453,432],{"class":404},[398,455,456],{"class":435}," pctChange",[398,458,439],{"class":404},[398,460,461],{"class":412}," ((newRate ",[398,463,445],{"class":404},[398,465,466],{"class":412}," oldRate) ",[398,468,469],{"class":404},"\u002F",[398,471,466],{"class":412},[398,473,474],{"class":404},"*",[398,476,477],{"class":435}," 100",[398,479,480],{"class":412},";\n",[398,482,484,487],{"class":400,"line":483},4,[398,485,486],{"class":404},"  return",[398,488,489],{"class":412}," {\n",[398,491,493],{"class":400,"line":492},5,[398,494,495],{"class":412},"    percentagePoints: ppChange,\n",[398,497,499],{"class":400,"line":498},6,[398,500,501],{"class":412},"    percentageChange: pctChange\n",[398,503,505],{"class":400,"line":504},7,[398,506,507],{"class":412},"  };\n",[398,509,511],{"class":400,"line":510},8,[398,512,513],{"class":412},"}\n",[398,515,517],{"class":400,"line":516},9,[398,518,520],{"emptyLinePlaceholder":519},true,"\n",[398,522,524],{"class":400,"line":523},10,[398,525,527],{"class":526},"sJ8bj","\u002F\u002F Interest rate: 5% → 7%\n",[398,529,531,534,536,539,541,544],{"class":400,"line":530},11,[398,532,533],{"class":408},"analyzeChange",[398,535,413],{"class":412},[398,537,538],{"class":435},"5",[398,540,420],{"class":412},[398,542,543],{"class":435},"7",[398,545,546],{"class":412},");\n",[398,548,550],{"class":400,"line":549},12,[398,551,552],{"class":526},"\u002F\u002F { percentagePoints: 2, percentageChange: 40 }\n",[10,554,556],{"id":555},"key-takeaways","Key Takeaways",[243,558,559,562,565,568,571],{},[246,560,561],{},"Percentage change is relative to the original value; percentage point change is the simple difference",[246,563,564],{},"The same percentage point change produces different percentage changes at different base values",[246,566,567],{},"Financial, political, and health data demand precise language — use percentage points for rate comparisons",[246,569,570],{},"When reading headlines, always clarify whether \"increased X%\" means percentage points or relative change",[246,572,573],{},"In professional writing, state both values to eliminate ambiguity",[10,575,577],{"id":576},"try-it-yourself","Try It Yourself",[15,579,580,581,586],{},"Calculate percentage changes and percentage point differences instantly with our ",[582,583,585],"a",{"href":584},"\u002Ftools\u002Fpercentage-calculator","Percentage Calculator",". Enter your values and get both results side by side.",[588,589,590],"style",{},"html pre.shiki code .szBVR, html code.shiki .szBVR{--shiki-default:#D73A49;--shiki-dark:#F97583}html pre.shiki code .sScJk, html code.shiki .sScJk{--shiki-default:#6F42C1;--shiki-dark:#B392F0}html pre.shiki code .sVt8B, html code.shiki .sVt8B{--shiki-default:#24292E;--shiki-dark:#E1E4E8}html pre.shiki code .s4XuR, html code.shiki .s4XuR{--shiki-default:#E36209;--shiki-dark:#FFAB70}html pre.shiki code .sj4cs, html code.shiki .sj4cs{--shiki-default:#005CC5;--shiki-dark:#79B8FF}html pre.shiki code .sJ8bj, html code.shiki .sJ8bj{--shiki-default:#6A737D;--shiki-dark:#6A737D}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}",{"title":35,"searchDepth":429,"depth":429,"links":592},[593,594,595,596,597,602,603,604,605,606],{"id":12,"depth":429,"text":13},{"id":20,"depth":429,"text":21},{"id":58,"depth":429,"text":59},{"id":88,"depth":429,"text":89},{"id":183,"depth":429,"text":184,"children":598},[599,600,601],{"id":188,"depth":451,"text":189},{"id":237,"depth":451,"text":238},{"id":257,"depth":451,"text":258},{"id":275,"depth":429,"text":276},{"id":332,"depth":429,"text":333},{"id":388,"depth":429,"text":389},{"id":555,"depth":429,"text":556},{"id":576,"depth":429,"text":577},"2026-05-28","Understand the critical difference between percentage change and percentage point change — and why confusing them leads to costly misinterpretations.","md",{"immutable":519},"\u002Fguides\u002Fpercentage-change-vs-percentage-point",{"title":5,"description":608},"guides\u002Fpercentage-change-vs-percentage-point","GLRZV9VDwoLR-D9rJLHVgA275nUEiqQitq2gjWAJx6s",1780401335696]