Percentage Calculator
Calculate percentages three different ways
Frequently Asked Questions
Multiply Y by X, then divide by 100. For example, 20% of 150 = (20 × 150) ÷ 100 = 30.
Divide the first number by the second, then multiply by 100. For example, 30 is what percent of 150? (30 ÷ 150) × 100 = 20%.
Percentage change = [(new value − old value) ÷ old value] × 100. A positive result is an increase, a negative result is a decrease.