-0.35% is the change from 286 to 285
Calculation steps:
[( 285 - 286 ) ÷ 286] x 100 = -0.35%
Formula
Percentage change = [(285 - 286) / 286] x 100
Subtract the new number by the original number
285 - 286 = -1
-1 ÷ 286 = -0.0034965034965034965
-0.0034965034965034965 x 100 = -0.35%