-31.67% is the change from 821 to 561
Calculation steps:
[( 561 - 821 ) ÷ 821] x 100 = -31.67%
Formula
Percentage change = [(561 - 821) / 821] x 100
Subtract the new number by the original number
561 - 821 = -260
-260 ÷ 821 = -0.3166869671132765
-0.3166869671132765 x 100 = -31.67%