-50.56% is the change from 180 to 89
Calculation steps:
[( 89 - 180 ) ÷ 180] x 100 = -50.56%
Formula
Percentage change = [(89 - 180) / 180] x 100
Subtract the new number by the original number
89 - 180 = -91
-91 ÷ 180 = -0.5055555555555555
-0.5055555555555555 x 100 = -50.56%