-8.89% is the change from 180 to 164
Calculation steps:
[( 164 - 180 ) ÷ 180] x 100 = -8.89%
Formula
Percentage change = [(164 - 180) / 180] x 100
Subtract the new number by the original number
164 - 180 = -16
-16 ÷ 180 = -0.08888888888888889
-0.08888888888888889 x 100 = -8.89%