-48.02% is the change from 329 to 171
Calculation steps:
[( 171 - 329 ) ÷ 329] x 100 = -48.02%
Formula
Percentage change = [(171 - 329) / 329] x 100
Subtract the new number by the original number
171 - 329 = -158
-158 ÷ 329 = -0.48024316109422494
-0.48024316109422494 x 100 = -48.02%