Price Increase/Decrease Calculator
Enter the current price and a change rate (%) to find the new price and the amount changed.
Category: Calculators
When to use?
Use it to quickly find the new price and the amount changed when you raise a price by 12% or lower it by 15%.
How to use
- Enter the current price.
- Enter the change rate: positive to raise, negative to lower.
- The new price and the increase or decrease are shown.
Input Explanation
Enter the current price and the change rate (%). Use 12 to raise, −15 to lower.
Calculation Basis
New price = current price × (1 + rate ÷ 100). Amount changed = new price − current price.
Usage Examples
- Adjust selling price - Calculate the new price after a price increase or a promotional cut.
- Check the size of an increase - See the actual amount added when applying an increase rate.
- Compare increase options - Apply different change rates to compare new prices and settle on one.
Examples
- 12% increase on 59,000 → 66,080
- 15% decrease on 120,000 → 102,000
Cautions
- It does not reflect stock tick sizes, so it may differ from actual trading prices.
- For complex promotions that stack increases and discounts, the actual charge may differ depending on the order of application.
FAQ
How do I enter a decrease?
Use a negative number. For a 15% decrease, enter −15.
How is the new price calculated?
Current price × (1 + rate ÷ 100). A 12% increase multiplies the current price by 1.12.
What does the amount changed mean?
The difference between the new and current price — positive for an increase, negative for a decrease.
Are decimal change rates allowed?
Yes. Rates with decimals such as 7.5% are calculated.
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