100 decreased by 10% = 90
100 decreased by 10 percent is 90. Step-by-step solution with the formula and worked example.
100 decreased by 10% = 90
decreased by %
Solution: 100 decreased by 10 percent
Decrease = 10% × 100 = 10
Result = 100 − 10 = 90
Result = 100 − 10 = 90
Step-by-step explanation
- Find the decrease: 10% of 100 = 10.
- Subtract it from the original: 100 − 10 = 90.
- Shortcut: multiply by (1 − 10/100) = ×0.9.
Good to know
Shortcut: decreasing by 10% is the same as multiplying by 0.9 (that is 100% − 10%). So 100 × 0.9 = 90 in one step.
Frequently asked questions
100 decreased by 10 percent
100 decreased by 10% = 90.
How is it calculated?
See the step-by-step solution above — it uses the standard percentage formula.
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