toolsimple percentage
fr en de es it
All calculators

Calculate a Percentage Decrease

Subtract a percentage from an amount: sales, discounts, rebates. Instant result.

Subtract a percentage from a number

What is Y decreased by X%?

%
Subtracting 30% means keeping 70%. Multiply by 0.70. Sale tip: −30% → × 0.70, −50% → × 0.50. Calculate in your head at the store: an item at 80 € with −25% is 80 × 0.75 = 60 €.
Result copied!

Related calculators

Calculate a Percentage of a Number

What is X% of Y?

Calculate a Percentage Increase

What is Y increased by X%?

Calculate Percentage Change

What is the change between two values?

How to subtract a percentage from a number

Subtracting a percentage from a number is the essential calculation for sales and promotions. Whether you're looking for the price after a 30% discount, the amount of a rebate, or the cost of a subscription with a reduction, the formula is: Result = Number × (1 − Percentage / 100).

In practice, subtracting 30% means keeping 70% of the original amount. The multiplying factor is 0.70. For −50%, multiply by 0.50. For −20%, by 0.80. Example: an item at €89 with a 40% discount is 89 × 0.60 = €53.40.

This calculator is ideal for comparing promotional offers, checking a sale price in store, or calculating a supplier discount on an invoice. Tip: to find the original price from the sale price, divide the sale price by the factor. For example, €60 after −25%: 60 / 0.75 = €80 original price.

Frequently asked questions

Multiply the price by 0.70 (because 100% − 30% = 70%). For example, an item at €150 with −30%: 150 × 0.70 = €105. The saving is €45.
Divide the sale price by (1 − percentage / 100). For example, an item at €60 after −25%: the factor is 0.75, so the original price is 60 / 0.75 = €80.
Multiply the price by the discount percentage / 100. For example, −30% on €150: 150 × 0.30 = €45 saved. The final price is 150 − 45 = €105.
No. All calculations are performed directly in your browser. No data is transmitted to our servers.