-33.13% is the change from 329 to 220
Calculation steps:
[( 220 - 329 ) ÷ 329] x 100 = -33.13%
Formula
Percentage change = [(220 - 329) / 329] x 100
Subtract the new number by the original number
220 - 329 = -109
-109 ÷ 329 = -0.331306990881459
-0.331306990881459 x 100 = -33.13%