-79.55% is the change from 88 to 18
Calculation steps:
[( 18 - 88 ) ÷ 88] x 100 = -79.55%
Formula
Percentage change = [(18 - 88) / 88] x 100
Subtract the new number by the original number
18 - 88 = -70
-70 ÷ 88 = -0.7954545454545454
-0.7954545454545454 x 100 = -79.55%