-97.22% is the change from 324 to 9
Calculation steps:
[( 9 - 324 ) ÷ 324] x 100 = -97.22%
Formula
Percentage change = [(9 - 324) / 324] x 100
Subtract the new number by the original number
9 - 324 = -315
-315 ÷ 324 = -0.9722222222222222
-0.9722222222222222 x 100 = -97.22%