-18.9% is the change from 164 to 133
Calculation steps:
[( 133 - 164 ) ÷ 164] x 100 = -18.9%
Formula
Percentage change = [(133 - 164) / 164] x 100
Subtract the new number by the original number
133 - 164 = -31
-31 ÷ 164 = -0.18902439024390244
-0.18902439024390244 x 100 = -18.9%