Percentage Change Calculator
Calculate percentage change from an initial value to a final value.
Calculations run in this browser. Values are not submitted to the server.
Result
Formula and assumptions
Percentage change = (final − initial) ÷ |initial| × 100. Initial value cannot be zero.
Example values are shown in the input placeholders. Results use browser number precision unless the tool uses exact integer arithmetic. Check units and assumptions before using a result.