-51.19% is the change from 336 to 164
Calculation steps:
[( 164 - 336 ) ÷ 336] x 100 = -51.19%
Formula
Percentage change = [(164 - 336) / 336] x 100
Subtract the new number by the original number
164 - 336 = -172
-172 ÷ 336 = -0.5119047619047619
-0.5119047619047619 x 100 = -51.19%