150 decreased by 80% = 30
150 decreased by 80 percent is 30. Step-by-step solution with the formula and worked example.
150 decreased by 80% = 30
decreased by %
Solution: 150 decreased by 80 percent
Decrease = 80% × 150 = 120
Result = 150 − 120 = 30
Result = 150 − 120 = 30
Step-by-step explanation
- Find the decrease: 80% of 150 = 120.
- Subtract it from the original: 150 − 120 = 30.
- 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 150 × 0.2 = 30 in one step.
Frequently asked questions
150 decreased by 80 percent
150 decreased by 80% = 30.
How is it calculated?
See the step-by-step solution above — it uses the standard percentage formula.
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