-70.94% is the change from 585 to 170
Calculation steps:
[( 170 - 585 ) ÷ 585] x 100 = -70.94%
Formula
Percentage change = [(170 - 585) / 585] x 100
Subtract the new number by the original number
170 - 585 = -415
-415 ÷ 585 = -0.7094017094017094
-0.7094017094017094 x 100 = -70.94%