500 decreased by 80% = 100
500 decreased by 80 percent is 100. Step-by-step solution with the formula and worked example.
500 decreased by 80% = 100
decreased by %
Solution: 500 decreased by 80 percent
Decrease = 80% × 500 = 400
Result = 500 − 400 = 100
Result = 500 − 400 = 100
Step-by-step explanation
- Find the decrease: 80% of 500 = 400.
- Subtract it from the original: 500 − 400 = 100.
- 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 500 × 0.2 = 100 in one step.
Frequently asked questions
500 decreased by 80 percent
500 decreased by 80% = 100.
How is it calculated?
See the step-by-step solution above — it uses the standard percentage formula.
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