-29.04% is the change from 823 to 584
Calculation steps:
[( 584 - 823 ) ÷ 823] x 100 = -29.04%
Formula
Percentage change = [(584 - 823) / 823] x 100
Subtract the new number by the original number
584 - 823 = -239
-239 ÷ 823 = -0.29040097205346294
-0.29040097205346294 x 100 = -29.04%