# Percentage (%) Difference Calculator

getcalc.com's **Percentage (%) Difference Calculator** is an online basic math function tool to calculate how much percent difference between two observations or quantities. To calculate X% of Y, X is what percentage of Y, change, increase, decrease or error, use the below calculators

## Definition & Formulas

**Percentage Difference** is an important mathematical function used to measure the new and initial score difference in percentage with respect to the mean value of the two scores. For example, what is the percentage difference for the value 70 to 75? The answer 7 is the percent difference for the above example. The percent difference & percent change is different from each other and the results are not identical.