-98.99% is the change from 397 to 4
Calculation steps:
[( 4 - 397 ) ÷ 397] x 100 = -98.99%
Formula
Percentage change = [(4 - 397) / 397] x 100
Subtract the new number by the original number
4 - 397 = -393
-393 ÷ 397 = -0.9899244332493703
-0.9899244332493703 x 100 = -98.99%