-29.89% is the change from 823 to 577
Calculation steps:
[( 577 - 823 ) ÷ 823] x 100 = -29.89%
Formula
Percentage change = [(577 - 823) / 823] x 100
Subtract the new number by the original number
577 - 823 = -246
-246 ÷ 823 = -0.29890643985419196
-0.29890643985419196 x 100 = -29.89%