-98.03% is the change from 406 to 8
Calculation steps:
[( 8 - 406 ) ÷ 406] x 100 = -98.03%
Formula
Percentage change = [(8 - 406) / 406] x 100
Subtract the new number by the original number
8 - 406 = -398
-398 ÷ 406 = -0.9802955665024631
-0.9802955665024631 x 100 = -98.03%