=Personal FinanceTOOLKIT

Percentage Change

Compare an old amount with a new amount.

Your numbers

Enter your numbers to see the result.

How Percentage Change works

Percentage change = (new value − original value) ÷ original value × 100. A zero original value cannot provide a meaningful percentage-change denominator.

A worked example

These sample values illustrate the calculation. Use your own numbers in the calculator for your result.

Example inputs
Old value
100
New value
120
Amount changed
$20.00
Percentage change
20.00%

Assumptions and limits

Rates, fees and contribution schedules are the assumptions you enter. This estimate does not include changes you have not entered.

Educational estimate only. This is not personalized financial, investment or tax advice.