How to Work Out Percentages Fast and Correctly

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To work out percentages fast, first convert the percentage to a decimal by moving the decimal two places left—so 25% becomes 0.25—then multiply by the number. For quick mental math, find 10% by dividing by 10, then multiply that for any other percentage. For example, 10% of 80 is 8, so 30% is 8 × 3 = 24. Use fractions too: 25% is 1/4, 50% is 1/2. Practice with real numbers, like tips or sales, to build speed and accuracy.