👤 By Why Calculator Team ✔ Reviewed by Matt Le (Founder of Why Calculator) 📅 Last Updated April 13, 2026
Discount Percentage Calculator
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This Discount Percentage Calculator helps you determine how much discount is applied to a product based on its original price and discount rate. Just enter the original and discounted price and it will quickly calculate the discount percentage. It’s helpful for business owners to set discounts or for shoppers to check their savings.
This tool makes calculations easy and fast. It’s great for planning sales, budgeting, or comparing deals.
How to Calculate Discount Percentage
The discount percentage represents the reduction in price relative to the original price. It helps businesses and customers understand how much they are saving on a product. The discount percentage can be calculated using different formulas depending on the given values.
1. Using Original and Sale Price
If you know the original price and the discount price, you can determine the discount percentage using the formula:
Discount Percentage = [(Original Price−Discounted Price) / Original Price] × 100
Example 1:
- Original Price = $100
- Discount Price = $75
Discount Percentage = (100−75/100) × 100 = 25%
So, the discount percentage is 25%.
Example 2:
If you know the original price and the discount percentage, you can find the final price after the discount using:
Discounted Price = Original Price − (Discount Percentage×Original Price) / 100
- Original Price = $200
- Discount Percentage = 30%
Discounted Price = 200 − (30 × 200) / 100 = 200 − 60 = 140
The final price after a 30% discount is $140.
| Original Price ($) | Discount Percentage (%) | Discount Amount ($) | Final Price ($) |
|---|---|---|---|
| 100 | 5% | 5 | 95 |
| 100 | 10% | 10 | 90 |
| 100 | 15% | 15 | 85 |
| 100 | 20% | 20 | 80 |
| 100 | 25% | 25 | 75 |
| 100 | 30% | 30 | 70 |
| 100 | 35% | 35 | 65 |
| 100 | 40% | 40 | 60 |
| 100 | 45% | 45 | 55 |
| 100 | 50% | 50 | 50 |
| 100 | 55% | 55 | 45 |
| 100 | 60% | 60 | 40 |
| 100 | 65% | 65 | 35 |
| 100 | 70% | 70 | 30 |
| 100 | 75% | 75 | 25 |
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