-32.83% is the change from 329 to 221
Calculation steps:
[( 221 - 329 ) ÷ 329] x 100 = -32.83%
Formula
Percentage change = [(221 - 329) / 329] x 100
Subtract the new number by the original number
221 - 329 = -108
-108 ÷ 329 = -0.3282674772036474
-0.3282674772036474 x 100 = -32.83%