-9.16% is the change from 906 to 823
Calculation steps:
[( 823 - 906 ) ÷ 906] x 100 = -9.16%
Formula
Percentage change = [(823 - 906) / 906] x 100
Subtract the new number by the original number
823 - 906 = -83
-83 ÷ 906 = -0.09161147902869757
-0.09161147902869757 x 100 = -9.16%