Percentage Calculator
Professional percentage calculator with step-by-step calculations and multiple calculation modes.
Calculate X% of Y
%
of
Enter values to calculate
decimals
-
Formula: (X ÷ 100) × Y
Enter values to see the calculation steps
Quick Reference & Formulas
X% of Y
(X ÷ 100) × Y
Example: 20% of 100 = 20
X is what % of Y
(X ÷ Y) × 100
Example: 25 is 25% of 100
X% more than Y
Y + (Y × X ÷ 100)
Example: 25% more than 100 = 125
Percentage Change
((New - Old) ÷ Old) × 100
Example: 100→120 = +20%