Find the percent change from the first value to the second. 30; 42

The percentage change is a 40% increase.

Step-by-step explanation:

Given

To determine

The percent change from the first value to the second

Using the formula

Percentage change = [New value - Old value] / | Old value | × 100

                                 = [42 - 30] / |30| × 100

                                 = 12 / 30 × 100

                                 = 0.4 × 100

                                 = 40% change

                                  = 40% increase

Therefore, the percentage change is a 40% increase.