Question

Last year 200 students participated in the Coastal Clean-Up.This year,260 students participated.What was the percent of change?

Answer 1

30%

Explanation:

Given the following data;

Old value = 200

New value = 260

We will calculate the change using;

`Change = new \; number - old \; number`

Substituting the values, we have;

`Change = 260 - 200`

Change = 60

Mathematically, percentage change is given by the formula;

`Percentage \; change = (increase)/(original \; number) * 100`

Substituting into the equation, we have;

`Percentage \; change = (60)/(200) * 100`

`Percentage \; change = 0.3 * 100`

Percent change = 30%

Therefore, the percent change is 30%