Numbers & calculations

Percentage calculator

Percentages, price cuts and changes. The numbers made a little clearer.

Your result—

How it works

Choose a calculation. X percent of Y is X × Y ÷ 100. Percentage change is (new − old) ÷ old × 100.

Try an example

20% × 150 = 30 · 80 → 100 = +25%

For change calculations, the initial value must be positive. Discounts must be between 0 and 100%.

Updated · 2026-09-22