-97.56% is the change from 328 to 8
Calculation steps:
[( 8 - 328 ) ÷ 328] x 100 = -97.56%
Formula
Percentage change = [(8 - 328) / 328] x 100
Subtract the new number by the original number
8 - 328 = -320
-320 ÷ 328 = -0.975609756097561
-0.975609756097561 x 100 = -97.56%