Home / Calculators / Percentage CalculatorEveryday mathPercentage CalculatorChoose the percentage problem you want to solve.Problem typeWhat is A% of B?A is what percent of B?Percent change from A to BABCalculateChoose a problem type and calculate.A% of B = (A ÷ 100) × BExample: 25% of 80 = 0.25 × 80 = 20.See percentage formulas →