-97.21% is the change from 323 to 9
Calculation steps:
[( 9 - 323 ) ÷ 323] x 100 = -97.21%
Formula
Percentage change = [(9 - 323) / 323] x 100
Subtract the new number by the original number
9 - 323 = -314
-314 ÷ 323 = -0.9721362229102167
-0.9721362229102167 x 100 = -97.21%