-19.61% is the change from 204 to 164
Calculation steps:
[( 164 - 204 ) ÷ 204] x 100 = -19.61%
Formula
Percentage change = [(164 - 204) / 204] x 100
Subtract the new number by the original number
164 - 204 = -40
-40 ÷ 204 = -0.19607843137254902
-0.19607843137254902 x 100 = -19.61%