9.84% is the change from 823 to 904
Calculation steps:
[( 904 - 823 ) ÷ 823] x 100 = 9.84%
Formula
Percentage change = [(904 - 823) / 823] x 100
Subtract the new number by the original number
904 - 823 = 81
81 ÷ 823 = 0.09842041312272175
0.09842041312272175 x 100 = 9.84%