The Percentage Calculator is a free online tool that handles the three most common percentage problems: finding a percentage of a number, finding what percent one number is of another, and calculating percentage increase or decrease between two values. It gives instant, accurate answers for school, work, finance, and everyday math.

• Percent of a number: (percent ÷ 100) × number • X is what % of Y: (X ÷ Y) × 100 • Percent change: ((new − old) ÷ old) × 100

1. Pick the calculation type (% of a number, X is what % of Y, or % change) 2. Enter the two values 3. Read your result instantly