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Percent Increase or Decrease Calculator

Percentage Change Formula:

\[ \text{Percentage Change} = \left( \frac{\text{New} - \text{Original}}{\text{Original}} \right) \times 100 \]

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1. What is a Percentage Change Calculator?

Definition: This calculator measures the relative change between an original value and a new value, expressed as a percentage.

Purpose: It helps determine increases or decreases in values like prices, quantities, measurements, or performance metrics.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ \text{Percentage Change} = \left( \frac{\text{New} - \text{Original}}{\text{Original}} \right) \times 100 \]

Where:

Explanation: The difference between new and original values is divided by the original value, then multiplied by 100 to convert to a percentage.

3. Interpreting Results

Positive Result: Indicates a percentage increase (new value is larger than original).
Negative Result: Indicates a percentage decrease (new value is smaller than original).
Zero Result: Indicates no change between values.

4. Using the Calculator

Tips: Enter both original and new values. The calculator handles all numerical values (prices, quantities, measurements, etc.).

5. Frequently Asked Questions (FAQ)

Q1: What if my original value is zero?
A: Percentage change is undefined when dividing by zero. The calculator requires a non-zero original value.

Q2: How do I interpret a negative percentage?
A: A negative percentage indicates a decrease from the original value to the new value.

Q3: Can I use this for percentage difference between two values?
A: Yes, the formula works for both increases and decreases between any two values.

Q4: What's the difference between percentage change and percentage points?
A: Percentage change measures relative change from an original value, while percentage points measure absolute differences between percentages.

Q5: How precise are the results?
A: Results are shown to 2 decimal places for precision in most applications.

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