731.31% is the change from 99 to 823
Calculation steps:
[( 823 - 99 ) ÷ 99] x 100 = 731.31%
Formula
Percentage change = [(823 - 99) / 99] x 100
Subtract the new number by the original number
823 - 99 = 724
724 ÷ 99 = 7.313131313131313
7.313131313131313 x 100 = 731.31%