Percentage Change Calculator
Percentage increase or decrease between an original and a new value.
Inputs
Results
- Increase
- 25 %
- Change (signed)
- 25 %
- Difference
- 20
Formula
% change = (new − original) ÷ |original| × 100
Assumptions & limits
- Percentage change is not symmetric: +25% then −25% does not return to the start.
Worked example
(100 − 80) ÷ 80 = +25%.