-97.2% is the change from 322 to 9
Calculation steps:
[( 9 - 322 ) ÷ 322] x 100 = -97.2%
Formula
Percentage change = [(9 - 322) / 322] x 100
Subtract the new number by the original number
9 - 322 = -313
-313 ÷ 322 = -0.9720496894409938
-0.9720496894409938 x 100 = -97.2%