Percent Off Calculations
Percent off calculations help you determine the final price after applying a discount. This is essential for smart shopping and understanding sale prices.
Formula
Final Price = Original Price - (Discount% / 100 x Original Price)
Or simplified: Final Price = Original Price x (1 - Discount% / 100)
Calculation Method
- Calculate the discount amount: (Discount% / 100) x Original Price
- Subtract from original price: Original Price - Discount Amount
- The result is your final price
Examples
Example 1: $50 item with 30% off
Discount = (30 / 100) x $50 = $15
Final Price = $50 - $15 = $35
Example 2: $120 with 25% off
Discount = (25 / 100) x $120 = $30
Final Price = $120 - $30 = $90
Shopping Tips
- Compare percent off vs. dollar off discounts
- Stack coupons when allowed
- Check if sale price beats competitor prices
- Calculate price per unit for best value
Common Discounts
10% off = multiply by 0.9 | 20% off = multiply by 0.8 | 25% off = multiply by 0.75 | 50% off = divide by 2
Quick Tips
- Double-check your inputs for accurate results
- Use parentheses to clarify order of operations
- Results are rounded — consider significant figures
Frequently Asked Questions
Multiply the original price by the discount percentage, then subtract from the original.
20% off $80 is $64 (you save $16).
Multiply the original price by (discount percentage / 100).
No, 100% off means the item is free.
Apply each discount sequentially to the result of the previous discount.
Yes, 50% off means you pay half the original price.