Percentage Change Calculator

Compare an original value with a new value.

Your result

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Enter your numbers.

Behind the answer

How to calculate

Change = (new − original) ÷ original × 100

From 80 to 100 is a 25% increase.

The original value must be positive. A change from zero has no defined percentage.

Results display up to 8 decimal places; exported numbers preserve calculation precision. This is a calculation summary, not an official certificate.