-33.13% is the change from 323 to 216
Calculation steps:
[( 216 - 323 ) ÷ 323] x 100 = -33.13%
Formula
Percentage change = [(216 - 323) / 323] x 100
Subtract the new number by the original number
216 - 323 = -107
-107 ÷ 323 = -0.33126934984520123
-0.33126934984520123 x 100 = -33.13%