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100 decreased by 1% = 99

100 decreased by 1 percent is 99. Step-by-step solution with the formula and worked example.

100 decreased by 1% = 99
decreased by %

Solution: 100 decreased by 1 percent

Decrease = 1% × 100 = 1
Result = 100 − 1 = 99

Step-by-step explanation

  1. Find the decrease: 1% of 100 = 1.
  2. Subtract it from the original: 100 − 1 = 99.
  3. Shortcut: multiply by (1 − 1/100) = ×0.99.

Good to know

Shortcut: decreasing by 1% is the same as multiplying by 0.99 (that is 100% − 1%). So 100 × 0.99 = 99 in one step.

Frequently asked questions

100 decreased by 1 percent
100 decreased by 1% = 99.

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

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