-29.4% is the change from 823 to 581
Calculation steps:
[( 581 - 823 ) ÷ 823] x 100 = -29.4%
Formula
Percentage change = [(581 - 823) / 823] x 100
Subtract the new number by the original number
581 - 823 = -242
-242 ÷ 823 = -0.29404617253948967
-0.29404617253948967 x 100 = -29.4%