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Percentage Calculator
Calculate percentages, discounts, and more
What is X% of Y?
About Percentage Calculator
A percentage is a way of expressing a number as a fraction of 100. The word "percent" means "per hundred." Percentages are used in many areas including discounts, interest rates, statistics, and more.
Common Formulas:
- What is X% of Y: (X ÷ 100) × Y
- X is what % of Y: (X ÷ Y) × 100
- Percentage Increase: Original × (1 + Percent ÷ 100)
- Percentage Decrease: Original × (1 − Percent ÷ 100)
Example: If an item costs $100 and is on sale for 20% off, you save $20 and pay $80.