-90.43% is the change from 585 to 56
Calculation steps:
[( 56 - 585 ) ÷ 585] x 100 = -90.43%
Formula
Percentage change = [(56 - 585) / 585] x 100
Subtract the new number by the original number
56 - 585 = -529
-529 ÷ 585 = -0.9042735042735043
-0.9042735042735043 x 100 = -90.43%