-50.3% is the change from 338 to 168
Calculation steps:
[( 168 - 338 ) ÷ 338] x 100 = -50.3%
Formula
Percentage change = [(168 - 338) / 338] x 100
Subtract the new number by the original number
168 - 338 = -170
-170 ÷ 338 = -0.5029585798816568
-0.5029585798816568 x 100 = -50.3%