-50.94% is the change from 585 to 287
Calculation steps:
[( 287 - 585 ) ÷ 585] x 100 = -50.94%
Formula
Percentage change = [(287 - 585) / 585] x 100
Subtract the new number by the original number
287 - 585 = -298
-298 ÷ 585 = -0.5094017094017094
-0.5094017094017094 x 100 = -50.94%