-97.09% is the change from 585 to 17
Calculation steps:
[( 17 - 585 ) ÷ 585] x 100 = -97.09%
Formula
Percentage change = [(17 - 585) / 585] x 100
Subtract the new number by the original number
17 - 585 = -568
-568 ÷ 585 = -0.9709401709401709
-0.9709401709401709 x 100 = -97.09%