-49.54% is the change from 329 to 166
Calculation steps:
[( 166 - 329 ) ÷ 329] x 100 = -49.54%
Formula
Percentage change = [(166 - 329) / 329] x 100
Subtract the new number by the original number
166 - 329 = -163
-163 ÷ 329 = -0.49544072948328266
-0.49544072948328266 x 100 = -49.54%