What is X% of Y?
15% of 200 = 30
Free everyday calculator
Percentage Calculator
Calculate a percentage of a number, find what percentage one value is of another, or measure percentage increase and decrease.
X is what percent of Y?
30 is 15% of 200
Increase or decrease
Increase of 25%
Percentage formulas
Percentage of a number: number × percentage ÷ 100.
What percentage: part ÷ whole × 100.
Percentage change: (new value − original value) ÷ original value × 100. A positive result is an increase; a negative result is a decrease.
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