80% off 100 = 20 | Discount Calculator
A 80% discount on 100 is 20, saving 80. See the step-by-step discount calculation.
80% off 100 = 20 (you save 80)
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Solution: What is 80 percent off 100?
Discount = 80% × 100 = 80
Final price = 100 − 80 = 20
Final price = 100 − 80 = 20
Step-by-step explanation
- Find the discount amount: 80% of 100 = 0.8 × 100 = 80.
- Subtract the discount from the original price: 100 − 80 = 20.
- So after a 80% discount you pay 20 and save 80.
Good to know
The quick way to a sale price is to multiply by what you still pay: keeping 20% means × 0.2, so 100 × 0.2 = 20 — the same answer in one step.
Frequently asked questions
What is 80 percent off 100?
80% off 100 = 20 (you save 80).
How is it calculated?
See the step-by-step solution above — it uses the standard percentage formula.
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