-12.22% is the change from 180 to 158
Calculation steps:
[( 158 - 180 ) ÷ 180] x 100 = -12.22%
Formula
Percentage change = [(158 - 180) / 180] x 100
Subtract the new number by the original number
158 - 180 = -22
-22 ÷ 180 = -0.12222222222222222
-0.12222222222222222 x 100 = -12.22%