-50.15% is the change from 329 to 164
Calculation steps:
[( 164 - 329 ) ÷ 329] x 100 = -50.15%
Formula
Percentage change = [(164 - 329) / 329] x 100
Subtract the new number by the original number
164 - 329 = -165
-165 ÷ 329 = -0.5015197568389058
-0.5015197568389058 x 100 = -50.15%