How Do You Work Out the Percentage of Something?

By Staff WriterLast Updated Mar 30, 2020 3:15:16 PM ET
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To calculate percentage, divide the number that is to be expressed as a percentage by the total or whole. The resulting number is then multiplied by 100 to obtain the percentage.

Percentage is a way to express fractions in an easily understood standardized format. The act of dividing a number by its possible whole is essentially that of converting a fraction into a decimal. When that decimal is multiplied by 100, the resulting number is the original fraction with a new denominator of 100. When every fraction is expressed with a common denominator, it allows for easier mental calculations and sets a baseline for quick comparisons.