-34.04% is the change from 329 to 217
Calculation steps:
[( 217 - 329 ) ÷ 329] x 100 = -34.04%
Formula
Percentage change = [(217 - 329) / 329] x 100
Subtract the new number by the original number
217 - 329 = -112
-112 ÷ 329 = -0.3404255319148936
-0.3404255319148936 x 100 = -34.04%