Percentage
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# Percent Increase or Decrease Calculator

getcalc.com's Percent Change Calculator is an online basic math functions tool to find the percentage increase or decrease of the reference score or value. To calculate X% of Y, X is what percentage of Y, percentage difference, change, increase, decrease or error, use the below calculators

## Definition and Formula: Percent (%) Increase and Decrease

Percent Change is an important mathematical function used to measure the increased or decreased value in percentage, from the reference value. For example, what is the increase percent in price, if the product pricing is changed from \$81 to \$87? The answer is 7% increase in price. Similarly, the increase or decrease percent is applicable in many engineering, finance, chemical industries. Formula to calculate percent change (increase or decrease) 