Percentage Calculator

Universal percentage calculator for all your percentage needs. Calculate percentages, percent change, and solve percentage problems.

The percentage value

Find this percentage of this number

The smaller number

The total number

Starting value

Ending value

The value you know

This value is what % of the unknown?

What is X% of Y?\nResult = (X / 100) * Y\n\nX is what % of Y?\nResult = (X / Y) * 100\n\nPercent change from X to Y:\nResult = ((Y - X) / X) * 100\n\nX is Y% of what?\nResult = X / (Y / 100)
Example 1: What is 15% of 200?\n15% of 200 = (15 / 100) * 200 = 30\n\nExample 2: 45 is what % of 180?\n(45 / 180) * 100 = 25%\n\nExample 3: Percent change from 50 to 65?\n((65 - 50) / 50) * 100 = 30% increase\n\nExample 4: 40 is 25% of what?\n40 / 0.25 = 160

What is a percentage?

Percentage means "per hundred" (from Latin per centum). It expresses a number as a fraction of 100. For example, 25% means 25 out of 100, or 25/100, or 0.25 as a decimal. Percentages are used for discounts, taxes, grades, statistics, and comparisons.

How do I calculate what percentage one number is of another?

Divide the part by the whole, then multiply by 100. Formula: (Part / Whole) * 100 = Percentage. Example: What percent is 15 of 60? (15 / 60) * 100 = 25%. So 15 is 25% of 60.

How do I find a percentage of a number?

Multiply the number by the percentage (as a decimal). Formula: Number * (Percentage / 100) = Result. Example: What is 20% of 150? 150 * 0.20 = 30. Or: 150 * (20 / 100) = 30.

How do I convert between percentages, decimals, and fractions?

Percent to decimal: divide by 100 (50% = 0.50). Decimal to percent: multiply by 100 (0.75 = 75%). Percent to fraction: put over 100 and simplify (40% = 40/100 = 2/5). Fraction to percent: divide and multiply by 100 (3/4 = 0.75 = 75%).

What are common percentage calculations I might need?

Sales tax (add 7% to price), discounts (subtract 20% from price), tips (15-20% of bill), grade scores (75/100 = 75%), interest rates (5% APR), body metrics (body fat %), sales growth (year-over-year %), and many financial ratios.