Calculate percentages with multiple calculation types. Find percentages of numbers, determine what percentage one number is of another, and calculate percentage changes.
To find X% of Y:
Convert percentage to decimal, then multiply by the value
25% of 80:
(25 ÷ 100) × 80 = 0.25 × 80 = 20
Percentages are a way of expressing numbers as fractions of 100. They are widely used in mathematics, statistics, finance, and everyday life to compare quantities, express changes, and communicate proportions clearly.
This calculator handles three common percentage calculations: finding a percentage of a number, determining what percentage one number is of another, and calculating percentage changes between values.
Understanding these calculations is essential for interpreting data, calculating discounts, analyzing growth rates, and making informed decisions in various contexts.
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To calculate a percentage of a number, convert the percentage to a decimal by dividing by 100, then multiply by the number. For example, 25% of 80 = (25 ÷ 100) × 80 = 0.25 × 80 = 20.