What is 80% of 20?
80% of 20 = 16
20 × 80/100 = 16
How to calculate 80% of 20
Multiply 20 by 80 and divide by 100: 20 × 80 ÷ 100 = 16. Equivalent shortcut: 20 × 0.8 = 16.
As a discount
A 80% discount on a 20 purchase saves you 16, so you pay 4. Stacking more discounts? Use the Discount & Tax Calculator — stacked discounts multiply, they don't add.
Related percentages
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