Percentage Calculator
Three common percentage calculations in one place.
What is X% of Y?
Result
0
X is what percent of Y?
Result
0%
Percentage increase / decrease
Change
0%
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How to calculate percentages
X% of Y = (X ÷ 100) × Y. For example, 15% of 200 = 0.15 × 200 = 30.
X is what percent of Y = (X ÷ Y) × 100. For example, 30 is (30 ÷ 200) × 100 = 15% of 200.
Percentage change = ((New − Old) ÷ Old) × 100. A positive result is an increase, a negative result is a decrease.