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FPSPOT

Percentage Calculator

Choose the question you want to answer. Percentage difference is symmetric, percentage of marks uses a total, and discount calculates a reduced price.

Choose a percentage calculation

These formulas answer different questions.

Use a dot for decimals; omit commas and exponents. Up to 100 characters.

Use a dot for decimals; omit commas and exponents. Up to 100 characters.

Choose a calculation and enter two values.

Enter the values, then calculate.

Percentage difference

For non-negative a and b, use |a − b| / ((a + b) / 2) × 100. Values 80 and 100 give 22.22% in either order. This formula differs from change relative to a starting value.

Marks and discounts

42 marks out of 50 is 84.00%. A 25% discount on a price of 80 gives a price of 60.00 and savings of 20.00. Values are rounded only at final display.