-9.44% is the change from 180 to 163
Calculation steps:
[( 163 - 180 ) ÷ 180] x 100 = -9.44%
Formula
Percentage change = [(163 - 180) / 180] x 100
Subtract the new number by the original number
163 - 180 = -17
-17 ÷ 180 = -0.09444444444444444
-0.09444444444444444 x 100 = -9.44%