20 decreased by 1% = 19.8
20 decreased by 1 percent is 19.8. Step-by-step solution with the formula and worked example.
20 decreased by 1% = 19.8
decreased by %
Solution: 20 decreased by 1 percent
Decrease = 1% × 20 = 0.2
Result = 20 − 0.2 = 19.8
Result = 20 − 0.2 = 19.8
Step-by-step explanation
- Find the decrease: 1% of 20 = 0.2.
- Subtract it from the original: 20 − 0.2 = 19.8.
- 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 20 × 0.99 = 19.8 in one step.
Frequently asked questions
20 decreased by 1 percent
20 decreased by 1% = 19.8.
How is it calculated?
See the step-by-step solution above — it uses the standard percentage formula.
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