This calculator allows you to increase or decrease any number by a percentage instantly.
It is commonly used in pricing, discounts, VAT calculations, salary adjustments, and financial planning.
Understanding how percentages affect values is essential for making accurate financial decisions.
Simply enter a base value and a percentage to calculate the adjusted result.
The result shows the final value after applying the percentage change.
A positive percentage increases the value, while a negative percentage decreases it.
This makes it easy to calculate price increases, discounts, and financial adjustments.
Formula: Base × (1 + Percentage ÷ 100)
The percentage is converted into a decimal and applied to the base value.
Example 1:
£100 + 20% = £120
Example 2:
£80 − 10% = £72
Example 3 (Business):
£50 product + 25% markup = £62.50
Example 4 (VAT):
£100 + 20% VAT = £120
Multiply by 1 plus the percentage.
Multiply by 1 minus the percentage.
Pricing, VAT, discounts and financial calculations.