-73.5% is the change from 585 to 155
Calculation steps:
[( 155 - 585 ) ÷ 585] x 100 = -73.5%
Formula
Percentage change = [(155 - 585) / 585] x 100
Subtract the new number by the original number
155 - 585 = -430
-430 ÷ 585 = -0.7350427350427351
-0.7350427350427351 x 100 = -73.5%