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Percentage Change Formula:
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Percentage change measures the relative difference between an old value and a new value, expressed as a percentage. It is commonly used in finance, economics, statistics, and various scientific fields to track growth, decline, or variation over time.
The calculator uses the percentage change formula:
Where:
Explanation: The formula calculates the difference between new and old values relative to the original value, then converts this ratio to a percentage by multiplying by 100.
Details: Percentage change is essential for analyzing trends, comparing data over different time periods, making investment decisions, tracking performance metrics, and understanding growth rates in various contexts.
Tips: Enter the original value (Old) and the new value (New). The old value cannot be zero as division by zero is undefined. Results show positive percentage for increases and negative percentage for decreases.
Q1: What does a positive percentage change indicate?
A: A positive percentage change indicates an increase or growth from the old value to the new value.
Q2: What does a negative percentage change indicate?
A: A negative percentage change indicates a decrease or decline from the old value to the new value.
Q3: Can percentage change be more than 100%?
A: Yes, percentage change can exceed 100% when the new value is more than double the old value, indicating significant growth.
Q4: How is percentage change different from percentage point?
A: Percentage change measures relative change from an original value, while percentage points measure absolute difference between two percentages.
Q5: What are common applications of percentage change?
A: Common applications include stock market analysis, sales growth tracking, population change studies, inflation rates, and academic performance evaluation.