Percentage Change Calculator
Percent change is (new − old) ÷ old × 100. A negative result is a decrease. This is the standard way to talk about growth in prices, scores, and traffic.
Change20
Percent change25%
Formula
% change = (new − old) / old × 100.
How to use this calculator
- Enter the starting number.
- Enter the later number.
- Read the signed percent.
Examples
80 to 100
Increase of 25%.
FAQ
Why not divide by the new value?+
Percent change is defined from the original baseline.
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