This free percentage calculator solves the three most common percentage problems in seconds: finding a percentage of a number, finding what percent one number is of another, and calculating percentage increase or decrease.
Pick the calculator that matches your question, type the two numbers and click "Go". The answer appears right below.
X% of Y = (X ÷ 100) × Y. X is what % of Y = (X ÷ Y) × 100. Percentage change = ((New − Old) ÷ Old) × 100.
20% of 500 is 100. 50 is 25% of 200. If a price goes from 100 to 150, it is a 50% increase.
Use it for discounts and sale prices, marks and exam results, salary increases, profit and loss, and tax or commission calculations.