-29.65% is the change from 823 to 579
Calculation steps:
[( 579 - 823 ) ÷ 823] x 100 = -29.65%
Formula
Percentage change = [(579 - 823) / 823] x 100
Subtract the new number by the original number
579 - 823 = -244
-244 ÷ 823 = -0.29647630619684084
-0.29647630619684084 x 100 = -29.65%