-34.24% is the change from 330 to 217
Calculation steps:
[( 217 - 330 ) ÷ 330] x 100 = -34.24%
Formula
Percentage change = [(217 - 330) / 330] x 100
Subtract the new number by the original number
217 - 330 = -113
-113 ÷ 330 = -0.3424242424242424
-0.3424242424242424 x 100 = -34.24%