-98.6% is the change from 286 to 4
Calculation steps:
[( 4 - 286 ) ÷ 286] x 100 = -98.6%
Formula
Percentage change = [(4 - 286) / 286] x 100
Subtract the new number by the original number
4 - 286 = -282
-282 ÷ 286 = -0.986013986013986
-0.986013986013986 x 100 = -98.6%