-97.58% is the change from 331 to 8
Calculation steps:
[( 8 - 331 ) ÷ 331] x 100 = -97.58%
Formula
Percentage change = [(8 - 331) / 331] x 100
Subtract the new number by the original number
8 - 331 = -323
-323 ÷ 331 = -0.9758308157099698
-0.9758308157099698 x 100 = -97.58%