Percentage Change Calculator
Calculate the percentage increase or decrease between any two values.
The starting value before the change
The ending value after the change
Percentage Change
📊 Calculation Breakdown
% Change = ((New − Old) / |Old|) × 100
% Change = ((150 − 100) / 100) × 100
% Change = (50.00 / 100) × 100
% Change = 50.00%
💡 What This Means
A change of 50.00% is significant and substantial.
The new value is 50.00% higher than the original.
📈 Common Examples
Formula
% Change = ((New Value − Original Value) / |Original Value|) × 100
Positive % = Increase | Negative % = Decrease
How it works
% Change = ((New − Old) / |Old|) × 100 Positive % = Increase Negative % = Decrease Examples: $100 → $150 = ((150 − 100) / 100) × 100 = 50% increase $200 → $150 = ((150 − 200) / 200) × 100 = −25% decrease 80 kg → 72 kg = ((72 − 80) / 80) × 100 = −10% decrease Absolute Change = New Value − Original Value Note: Cannot calculate % change from zero (original = 0)
The percentage change calculator determines how much a value has increased or decreased as a percentage. Enter your original value and new value to calculate the percentage change, absolute change, and get detailed analysis. Useful for tracking growth, decline, performance changes, and more.
Why this matters
Percentage change provides context for comparing values of different magnitudes. A $50 increase means different things depending on whether you started with $100 or $1,000. Understanding percentage changes helps with financial analysis, performance tracking, and data interpretation.
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Learn more
The complete guide to percentage change calculator
Formulas, examples, and tips explained in plain English