80 decreased by 1% = 79.2
80 decreased by 1 percent is 79.2. Step-by-step solution with the formula and worked example.
80 decreased by 1% = 79.2
decreased by %
Solution: 80 decreased by 1 percent
Decrease = 1% × 80 = 0.8
Result = 80 − 0.8 = 79.2
Result = 80 − 0.8 = 79.2
Step-by-step explanation
- Find the decrease: 1% of 80 = 0.8.
- Subtract it from the original: 80 − 0.8 = 79.2.
- 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 80 × 0.99 = 79.2 in one step.
Frequently asked questions
80 decreased by 1 percent
80 decreased by 1% = 79.2.
How is it calculated?
See the step-by-step solution above — it uses the standard percentage formula.
Calculated instantly in your browser. Try your own numbers in the box above, or use the full Percentage Calculator.