Percentage Increase Calculator

Percentage Increase Calculator is a free instant online tool that calculates percentage change between any two numbers as you type — no buttons, no waiting. The unique three-field design lets you fill in any two of the three fields (Original Value, New Value, Percentage Change) and the third auto-calculates. It also includes a 'Quick: Value + Percent' mode for questions like 'What is X increased by Y%?'. Handles both increases (shown in green) and decreases (shown in red) automatically. Perfect for salary raises, price changes, stock growth, rent increases, and property value tracking. Every calculation shows formula and step-by-step breakdown.