Answer:
75%
Step-by-step explanation:
A change from 40 to 70 represents a positive change (increase) of 75%
Percent change = 70 - 40
|40|
x 100 = 30
40
x 100 = 75 % (increase)
Where: 40 is the old value and 70 is the new value. In this case we have a positive change (increase) of 75 percent because the new value is greater than the old value.
