Answer:
50%
Step-by-step explanation:
Percent change = [(63 - 42) / |42|] x 100 = [(21) / 42] x 100 = 50 % (increase)
Where: 42 is the old value and 63 is the new value. In this case we have a positive change (increase) of 50 percent because the new value is greater than the old value.
