-50.9% is the change from 332 to 163
Calculation steps:
[( 163 - 332 ) ÷ 332] x 100 = -50.9%
Formula
Percentage change = [(163 - 332) / 332] x 100
Subtract the new number by the original number
163 - 332 = -169
-169 ÷ 332 = -0.5090361445783133
-0.5090361445783133 x 100 = -50.9%