What is 20 decreased by 40%?

12

20 decreased by 40% is 12.

How it is worked out

Multiply by 1 minus the percentage as a decimal.

20 × 0.6 = 12 — a reduction of 8

Try your own numbers

Answer12

Open the full percentage calculator for every other form.

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Questions

What is 20 decreased by 40%?
20 decreased by 40% is 12. 20 × 0.6 = 12 — a reduction of 8.
How do you work this out?
Multiply by 1 minus the percentage as a decimal.
Can I use other numbers?
Yes — the calculator on this page takes any two numbers, and the full percentage calculator covers every form: percentage of a number, one number as a percentage of another, percentage change, increase and decrease.