Percentage Change Calculator
Find the percentage change between any two values.
Percentage change formula
Change % = ((New − Old) ÷ |Old|) × 100
A positive result = increase. A negative result = decrease.
Enter the original value in "From" and the new value in "To". The calculator handles both increases and decreases automatically.
Percentage change vs percentage difference
Percentage change is directional — it measures change from an original to a new value. Percentage difference is non-directional — it measures the relative difference between two values without implying which came first. Use percentage change when comparing before and after; use percentage difference when comparing two things side by side.
Frequently asked questions
Not exactly. Percentage change covers both increases (positive result) and decreases (negative result). Percentage increase specifically refers to when the new value is higher than the original.
The two values are equal — no change has occurred.