Find the percentage increase or decrease between two values — instantly.
From 100 to 125 is a +25.00% change (1.250× the start).
A free percentage growth calculator. Enter a starting value and an ending value to see the percentage change (increase or decrease), the absolute delta and the multiplier. Works for sales growth, price changes, statistics, grades and everyday math — no signup, instant results.
Percentage change = ((End − Start) / |Start|) × 100. A positive result is an increase, a negative result is a decrease. Using |Start| as the denominator keeps the sign of the change correct even when the starting value is negative.
Percentage increase has a direction — it's relative to the starting value. Percentage difference is symmetric and uses the average of the two values as the denominator, so the order doesn't matter. Most everyday questions (sales growth, price hikes, grade changes) want percentage change, not percentage difference.
Yes. An ending value lower than the start produces a negative result (e.g. 200 → 150 is −25%). The headline switches to ‘Percentage decrease’ and turns red.
A doubling is a +100% increase (you added 100% of the original on top). +125% means the value grew to 2.25× the starting amount. The multiplier pill makes this explicit so you can sanity-check the result at a glance.
Use the sibling Apply Percentage calculator — it takes a starting value and a percentage and returns the new value. Handy for markups, discounts, tips and projected growth.
Percentage change is undefined when the start is zero (you can't divide by zero). The calculator returns 0% in that case and you should rely on the absolute change instead.
Apply a percentage increase or decrease to any number — markup, discount, tip or growth, in one tap.
See your new salary after a raise — or the hike % you need to hit a target.
See exactly how your money grows — with daily, monthly, or annual compounding.
Plan monthly investments or a one-time lump sum and see the power of compounding over time.