About this calculator
Calculate percentage increase or decrease between two values.
A positive result is an increase; a negative result is a decrease.
Formula
Percentage change = (new − old) ÷ |old| × 100.
Example
100 to 125 = +25%.
Accuracy
NUMTX shows the assumptions next to the calculation so you can replace defaults with values that match your situation. For measurements, supplier rates, fees, interest, tax or regulated work, confirm important figures with the appropriate official or professional source.