-97.98% is the change from 397 to 8
Calculation steps:
[( 8 - 397 ) ÷ 397] x 100 = -97.98%
Formula
Percentage change = [(8 - 397) / 397] x 100
Subtract the new number by the original number
8 - 397 = -389
-389 ÷ 397 = -0.9798488664987406
-0.9798488664987406 x 100 = -97.98%