-17.59% is the change from 108 to 89
Calculation steps:
[( 89 - 108 ) ÷ 108] x 100 = -17.59%
Formula
Percentage change = [(89 - 108) / 108] x 100
Subtract the new number by the original number
89 - 108 = -19
-19 ÷ 108 = -0.17592592592592593
-0.17592592592592593 x 100 = -17.59%