Percentage Change Calculator
Calculate percentage increase, decrease, or difference between two values. Perfect for analyzing growth rates, price changes, and statistical variations.
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% Change
% Difference
% Increase
% Decrease
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Percentage Change
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How to Use the Percentage Change Calculator
The Percentage Change Calculator is a versatile tool that helps you determine the relative change between two values expressed as a percentage. It supports four different calculation modes: Percentage Change (standard increase/decrease), Percentage Difference (absolute difference), Percentage Increase (growth only), and Percentage Decrease (reduction only). Simply select your preferred calculation method, enter your original and new values, and instantly see the percentage change along with a visual representation and detailed breakdown of the calculation process.
Percentage Change Formula:
% Change = ((New Value - Original Value) / Original Value) × 100
Percentage Difference Formula:
% Difference = (|Value1 - Value2| / ((Value1 + Value2) / 2)) × 100
% Change = ((New Value - Original Value) / Original Value) × 100
Percentage Difference Formula:
% Difference = (|Value1 - Value2| / ((Value1 + Value2) / 2)) × 100
💹 Real-World Example:
Stock Price Analysis:
Original Price: $150.00 per share
New Price: $165.00 per share
Calculation: ((165 - 150) / 150) × 100
Step 1: Difference = 165 - 150 = 15
Step 2: Percentage = (15 / 150) × 100 = 10.00%
Interpretation: The stock price increased by 10%, representing a positive investment return.
Understanding percentage changes is essential in business, finance, academics, and everyday decision-making. Whether you're analyzing sales growth, tracking academic performance, monitoring investment returns, or comparing prices, this calculator provides accurate percentage calculations with clear visual feedback. The tool automatically determines whether the change represents an increase, decrease, or remains neutral, helping you quickly interpret the significance of your data and make informed decisions based on quantitative analysis.