Common Discount Quick Reference
| Original Price | 10% Off | 20% Off | 25% Off | 50% Off |
|---|---|---|---|---|
| $25 | $22.50 | $20.00 | $18.75 | $12.50 |
| $50 | $45.00 | $40.00 | $37.50 | $25.00 |
| $100 | $90.00 | $80.00 | $75.00 | $50.00 |
| $200 | $180.00 | $160.00 | $150.00 | $100.00 |
How to Calculate a Discount
The sale price formula is straightforward:
Sale Price = Original Price × (1 − Discount% / 100)
For example, a $80 item at 25% off: $80 × 0.75 = $60.
Stacking Multiple Discounts
When two discounts are applied sequentially, the total discount is less than just adding the percentages. A 20% then 10% discount on $100 gives $72, not $70 as a single 30% discount would.