Percentage Calculators: Change, Difference and Error
Percentages appear everywhere, from discounts and pay rises to exam marks and statistics. The hard part is knowing which formula to use, because percentage change, percentage difference and percentage points are not the same thing.
Each calculator explains its formula and shows a worked example, so you can be sure you are answering the right question.
Percentage CalculatorWork out percentages, percentage change and increases or decreases.Reverse Percentage CalculatorFind the original price or amount before a percentage increase or decrease was applied.Percentage Point CalculatorFind the difference between two percentages in percentage points, and compare it with the percentage change.Percentage Difference and Percent Error CalculatorFind the percentage difference between two values, or the percent error of a measurement against the true value.
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