Percentage Calculator
Four percentage calculators in one — find percentages, percentage change, what percent one number is of another, and reverse percentage.
Type 1
What is X% of Y?
Formula
Type 2
X is what % of Y?
Formula
Type 3
Percentage Change
Formula
Type 4
Find the Original (Reverse %)
Formula
Percentage Formulas
X% of Y = (X ÷ 100) × Y · X is what % of Y = (X ÷ Y) × 100 · % Change = ((New−Old) ÷ |Old|) × 100
Common Examples
15% of 200 = 30 · 30 is 25% of 120 · 80 to 100 = 25% increase · 20% off $80 = $64