Percentage Increase Calculator

A percentage increase calculator measures the relative change between two numbers: an original value and a new value. It returns the percentage change, the absolute difference, and the direction of movement, using the standard percent-change formula.

Anyone comparing two figures from the same unit: employees checking a raise, shoppers comparing price changes, investors reviewing growth from one period to the next, and students checking homework. If the two values use different units or currencies, convert one of them first.

A salary moving from $50,000 to $57,500 is a 15% increase. A bill falling from $120 to $96 is a 20% decrease. Marketers compare conversion counts month over month, households compare grocery totals, and students verify percent-change homework. The tool flags the direction so a negative change is never mistaken for a positive one.

Percentage change = ((New Value - Original Value) / |Original Value|) x 100. The absolute original value in the denominator keeps results consistent when the baseline is negative. Compare like periods (year over year, month over month) rather than mixing measurement windows.

The most common error is dividing by the new value instead of the original, which understates decreases and overstates increases. Percentage change is not reversible: a 50% decrease needs a 100% increase to return to the starting point. This calculator compares exactly two values; it does not average multiple periods or adjust for inflation.

Calculate precise percentage changes, growth deltas, and markdown shifts between any two figures. Ideal for evaluating salary offers, inflation price hikes, or investment returns directly in your browser.