Percentage Change Calculator
Calculate the percentage increase or decrease between two values. Perfect for tracking growth, analyzing trends, or comparing performance metrics.
Frequently Asked Questions
How is percentage change calculated?
Percentage change is calculated as: ((New Value - Original Value) / Original Value) × 100. A positive result means an increase, while negative means a decrease. For example, going from 100 to 150 is a 50% increase: ((150-100)/100) × 100 = 50%.
What's the difference between percentage change and percentage point change?
Percentage change is relative to the original value (e.g., from 10% to 20% is a 100% increase). Percentage point change is the absolute difference (e.g., from 10% to 20% is a 10 percentage point increase). Use percentage change for growth rates.
What if my original value is zero?
You cannot calculate a percentage change from zero (it would be infinite or undefined). Instead, report it as: "Increased from 0 to [new value]" or calculate the absolute change only. This is common when starting a new campaign or launching a product.