Convertools

Percent Difference Calculator

Calculate percent difference between two values using |a-b| divided by the average of a and b.

Author

Prof. Sunita Rao

Math editorial contributor

Indian-American chemical engineer at Stanford, developing biodegradable alternatives to single-use plastics

Reviewed by

Dr. Samuel Okafor

Math content reviewer

Nigerian-Canadian data scientist with a PhD from the University of Toronto, building ML models for early cancer detection

Last updatedFebruary 22, 2026

PublishedFebruary 22, 2026

Table of Contents

  1. Reference values
  2. Calculator
  3. Reference table
  4. FAQs
  5. Methodology and review
  6. Related conversions

50 Value a; 60 Value b =

18.181818 percent

Representative value from the Percent Difference Calculator reference table.

Reference Values

Browse 25 reference values with individual detail pages for quick lookup.

Browse all reference values

Percent Difference Calculator

Calculate percent difference between two values using |a-b| divided by the average of a and b.

Calculated Result

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Reference Table

Use this complete table for quick lookup and internal linking to specific value pages.

Percent Difference Calculator Reference
ScenarioPercent Difference
10 Value a; 12 Value b18.181818 percent
10 Value a; 30 Value b100 percent
10 Value a; 60 Value b142.857143 percent
10 Value a; 120 Value b169.230769 percent
10 Value a; 250 Value b184.615385 percent
25 Value a; 12 Value b70.27027 percent
25 Value a; 30 Value b18.181818 percent
25 Value a; 60 Value b82.352941 percent
25 Value a; 120 Value b131.034483 percent
25 Value a; 250 Value b163.636364 percent
50 Value a; 12 Value b122.580645 percent
50 Value a; 30 Value b50 percent
50 Value a; 60 Value b18.181818 percent
50 Value a; 120 Value b82.352941 percent
50 Value a; 250 Value b133.333333 percent
100 Value a; 12 Value b157.142857 percent
100 Value a; 30 Value b107.692308 percent
100 Value a; 60 Value b50 percent
100 Value a; 120 Value b18.181818 percent
100 Value a; 250 Value b85.714286 percent
200 Value a; 12 Value b177.358491 percent
200 Value a; 30 Value b147.826087 percent
200 Value a; 60 Value b107.692308 percent
200 Value a; 120 Value b50 percent
200 Value a; 250 Value b22.222222 percent

Frequently Asked Questions

Common questions about Percent Difference Calculator, formulas, and typical use cases.

What does the Percent Difference Calculator calculator do?

It helps with comparing two measurements without assigning one as the baseline value.

What formula does the Percent Difference Calculator calculator use?

Percent difference = |a - b| / ((a + b) / 2) × 100.

What inputs are valid?

Use non-negative values and avoid both values being zero (average would be zero).

When would I use this?

comparing two measurements without assigning one as the baseline value

Methodology and Review

This page combines a live calculator, precomputed reference values, and FAQ content from the same conversion definition to reduce mismatch between calculator output and lookup tables.

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