Percentage Increase Calculator
Calculate the new value after increasing or decreasing any number by a given percentage. Useful for finance, retail pricing, salary negotiations, and more.
How to Use
Percentage Increase: Enter the original value and the percentage you want to add to it. The calculator will show the new value and the amount added.
Percentage Decrease: Enter the original value and the percentage you want to subtract. The calculator shows the reduced value and how much was removed.
Example: A product costs $120 and goes on sale with a 25% discount. Enter 120 as the original value and 25 as the decrease percentage. Result: $90.00 (you save $30).
How It Works
Percentage increase and decrease are fundamental calculations used daily in business, shopping, investing, and everyday life. They allow you to quickly determine what a new value will be after a relative change is applied.
Percentage Increase Formula: New Value = Original × (1 + Percentage / 100). For example, increasing 200 by 15%: 200 × 1.15 = 230.
Percentage Decrease Formula: New Value = Original × (1 − Percentage / 100). For example, decreasing 200 by 10%: 200 × 0.90 = 180.
These formulas are used in contexts like calculating VAT/tax on prices, applying salary raises, computing sale discounts, and modelling growth or decline in data.
