Using the Discount Calculator
For several successive discounts, run the calculation again using the already reduced price. A second 10% reduction applies to a smaller amount, so two 10% discounts do not equal one 20% discount.
Worked example
Use the example inputs below to reproduce this result. These are the form's starting values, not recommended targets. Changing your inputs updates your result above; this worked example stays fixed for comparison. Results are rounded for display.
Example inputs
- Original amount
- 100
- Discount (%)
- 10
Example result
- Percentage amount
- 10
- Adjusted total
- 90
Method and assumptions
Savings = original × discount / 100; price = original − savings.
Identify the base before applying a rate
A percentage always applies to a particular base amount. Write down which amount is being multiplied and whether the rate adds to it, subtracts from it or converts it to another unit. Applying the same percentage to a different base produces a different result. For a real transaction, use the rate and rounding convention that actually apply.
Common question
Is 20% off the same as paying 20% of the price?
No. A 20% discount leaves 80% to pay. Paying 20% of the original price would mean an 80% discount.
Guide updated .