What is 20% of 400?
20% of 400 = 80
400 × 20/100 = 80
How to calculate 20% of 400
Multiply 400 by 20 and divide by 100: 400 × 20 ÷ 100 = 80. Equivalent shortcut: 400 × 0.2 = 80.
As a discount
A 20% discount on a 400 purchase saves you 80, so you pay 320. Stacking more discounts? Use the Discount & Tax Calculator — stacked discounts multiply, they don't add.
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