-70.6% is the change from 585 to 172
Calculation steps:
[( 172 - 585 ) ÷ 585] x 100 = -70.6%
Formula
Percentage change = [(172 - 585) / 585] x 100
Subtract the new number by the original number
172 - 585 = -413
-413 ÷ 585 = -0.705982905982906
-0.705982905982906 x 100 = -70.6%