1. What Is Percentage Difference?

Percentage difference measures the relative difference between two values as a percentage of their average. It's useful for comparing two values where neither is clearly a reference or "correct" value.

2. How Does The Calculator Work?

The calculator uses the percentage difference formula:

Where:

• \( v1 \) — First value
• \( v2 \) — Second value
• \( |v1 - v2| \) — Absolute difference between values
• \( (v1 + v2)/2 \) — Average of the two values

Explanation: The formula calculates how much two numbers differ relative to their average size.

3. When To Use Percentage Difference

Details: Use percentage difference when comparing two experimental values, two measurements, or any two numbers where neither is a standard or reference value.

4. Using The Calculator

Tips: Enter any two numerical values. The calculator will compute the percentage difference between them. Works with positive and negative values.

5. Frequently Asked Questions (FAQ)

Q1: How is percentage difference different from percentage change?
A: Percentage change compares a new value to an old value (reference), while percentage difference compares two values symmetrically.

Q2: What does a 0% difference mean?
A: A 0% difference means the two values are identical.

Q3: Can percentage difference exceed 100%?
A: Yes, if one value is positive and the other negative, or if one value is much larger than the other.

Q4: How to interpret percentage difference?
A: The larger the percentage difference, the more dissimilar the values are. Interpretation depends on context.

Q5: What if both values are zero?
A: The calculation is undefined (division by zero). The calculator will show no result in this case.