What is 90% of 800?

90% of 800 = 720

How to work it out

1. Convert the percentage to a decimal: 90 ÷ 100 = 0.9
2. Multiply by the number: 0.9 × 800 = 720

800 increased by 90% is 1,520; decreased by 90% it is 80 (useful for discounts).

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