-8.96% is the change from 904 to 823
Calculation steps:
[( 823 - 904 ) ÷ 904] x 100 = -8.96%
Formula
Percentage change = [(823 - 904) / 904] x 100
Subtract the new number by the original number
823 - 904 = -81
-81 ÷ 904 = -0.08960176991150443
-0.08960176991150443 x 100 = -8.96%