Percentage Calculator

Calculate percentages instantly — find percentage of a number, what percent one number is of another, or percentage change.

What is X% of Y?

What is% of=
—

Formula: result = X ÷ 100 × Y

X is what % of Y?

is what % of=
—

Formula: result = (X ÷ Y) × 100

Percentage Change

Fromto=
—

Formula: result = ((New - Old) ÷ Old) × 100

Quick Reference

PercentageFractionDecimal
10%1/100.1
20%1/50.2
25%1/40.25
33.33%1/30.333
50%1/20.5
66.67%2/30.667
75%3/40.75
100%1/11.0

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Results are for informational purposes only. Verify important calculations independently.