-46.39% is the change from 166 to 89
Calculation steps:
[( 89 - 166 ) ÷ 166] x 100 = -46.39%
Formula
Percentage change = [(89 - 166) / 166] x 100
Subtract the new number by the original number
89 - 166 = -77
-77 ÷ 166 = -0.463855421686747
-0.463855421686747 x 100 = -46.39%