-30.21% is the change from 821 to 573
Calculation steps:
[( 573 - 821 ) ÷ 821] x 100 = -30.21%
Formula
Percentage change = [(573 - 821) / 821] x 100
Subtract the new number by the original number
573 - 821 = -248
-248 ÷ 821 = -0.3020706455542022
-0.3020706455542022 x 100 = -30.21%