-79.31% is the change from 406 to 84
Calculation steps:
[( 84 - 406 ) ÷ 406] x 100 = -79.31%
Formula
Percentage change = [(84 - 406) / 406] x 100
Subtract the new number by the original number
84 - 406 = -322
-322 ÷ 406 = -0.7931034482758621
-0.7931034482758621 x 100 = -79.31%