-30.46% is the change from 834 to 580
Calculation steps:
[( 580 - 834 ) ÷ 834] x 100 = -30.46%
Formula
Percentage change = [(580 - 834) / 834] x 100
Subtract the new number by the original number
580 - 834 = -254
-254 ÷ 834 = -0.30455635491606714
-0.30455635491606714 x 100 = -30.46%