We will solve the problem for both cases:
Case 1:
If the amount increases by 7% we have the number for which we are going to multiply is given by:
Case 2:
If the amount decreases by 7% we have the number for which we are going to multiply is given by:
Answer:
single multiplier you would use for each case is:
x = 1.07 (increase)
x = 0.93 (decrease)