Online Percent Change Calculator

Enter an old value and a new value to find the exact percentage increase or decrease between them, plus the absolute difference. Perfect for prices, scores and metrics.

Tool Features

• Compute percentage increase or decrease
• Show the absolute difference too
• Handles negative and zero base values
• Responsive design for mobile and desktop
• No registration or software installation

Common Usage

• Track price changes over time
• Measure score or grade improvement
• Compare month-over-month metrics
• Calculate growth or decline rates