Percentage Calculator

Quickly calculate percentages, percentage of a number, and percentage change.

Calculation type Value X Value Y

Result:

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Common percentage formulas

What is X% of Y? → (X ÷ 100) × Y
X is what percent of Y? → (X ÷ Y) × 100
Percentage change from A to B: → ((B − A) ÷ A) × 100

Examples

What is 20% of 50? → 10
30 is what percent of 120? → 25%
Change from 80 to 100 → 25% increase

FAQ

What does a negative percentage change mean?
It indicates a decrease from the original value.

Can I use this for discounts?
Yes. Use “What is X% of Y?” to find discount amounts.