-87.52% is the change from 585 to 73
Calculation steps:
[( 73 - 585 ) ÷ 585] x 100 = -87.52%
Formula
Percentage change = [(73 - 585) / 585] x 100
Subtract the new number by the original number
73 - 585 = -512
-512 ÷ 585 = -0.8752136752136752
-0.8752136752136752 x 100 = -87.52%