Percent Increase / Decrease

Percent Increase / Decrease (percent change) is a arithmetic relationship written as Change relative to original or % = ((new−old)/old) × 100. Students use it to solve unknowns when enough values are known.

Write Change relative to original, substitute the known numbers carefully, then simplify. Worked walkthrough: Old = 50 New = 60 % = (10/50)×100 = 20%.

Percent Increase / Decrease usually appears in arithmetic units during middle or secondary school. Match difficulty with MathDigits grade worksheets so practice fits the curriculum year.

On this page the worked result is 20% increase. Generate a formula worksheet below for more unique practice sets.