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100 decreased by 25% = 75

100 decreased by 25 percent is 75. Step-by-step solution with the formula and worked example.

100 decreased by 25% = 75
decreased by %

Solution: 100 decreased by 25 percent

Decrease = 25% × 100 = 25
Result = 100 − 25 = 75

Step-by-step explanation

  1. Find the decrease: 25% of 100 = 25.
  2. Subtract it from the original: 100 − 25 = 75.
  3. Shortcut: multiply by (1 − 25/100) = ×0.75.

Good to know

Shortcut: decreasing by 25% is the same as multiplying by 0.75 (that is 100% − 25%). So 100 × 0.75 = 75 in one step.

Frequently asked questions

100 decreased by 25 percent
100 decreased by 25% = 75.

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

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