Quickly calculate percentages, find what percentage one number is of another, and compute percent changes.
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A percentage calculator is a mathematical utility that computes proportions expressed as fractions of 100. The term percentage originates from the Latin phrase "per centum," meaning "by the hundred." It enables comparisons between varying quantities on a uniform relative scale.
P = (\frac{X}{100}) \times Y \quad \text{and} \quad \% = (\frac{X}{Y}) \times 100To determine what X% of Y is, convert the percentage into a decimal by dividing by 100, then multiply by Y. To find what percentage X is of Y, divide X by Y and multiply the quotient by 100.
Scenario: Find what 15% of $80 is, and calculate what percentage 20 is of 80.
For 15% of 80: Convert 15% to 0.15, then calculate 0.15 × 80 = 12.
For 20 of 80: Divide 20 by 80 = 0.25, then multiply by 100 = 25%.
Multiply the base number by the percentage number, then press the percentage symbol (%) key or divide the result by 100.
A percentage represents a portion out of 100, whereas a percentile indicates the relative rank or percentage of values in a data set that fall below a specific point.
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15% of 80 is equal to 12