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80 decreased by 80% = 16

80 decreased by 80 percent is 16. Step-by-step solution with the formula and worked example.

80 decreased by 80% = 16
decreased by %

Solution: 80 decreased by 80 percent

Decrease = 80% × 80 = 64
Result = 80 − 64 = 16

Step-by-step explanation

  1. Find the decrease: 80% of 80 = 64.
  2. Subtract it from the original: 80 − 64 = 16.
  3. Shortcut: multiply by (1 − 80/100) = ×0.2.

Good to know

Shortcut: decreasing by 80% is the same as multiplying by 0.2 (that is 100% − 80%). So 80 × 0.2 = 16 in one step.

Frequently asked questions

80 decreased by 80 percent
80 decreased by 80% = 16.

How is it calculated?
See the step-by-step solution above — it uses the standard percentage formula.

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