724.24% is the change from 99 to 816
Calculation steps:
[( 816 - 99 ) ÷ 99] x 100 = 724.24%
Formula
Percentage change = [(816 - 99) / 99] x 100
Subtract the new number by the original number
816 - 99 = 717
717 ÷ 99 = 7.242424242424242
7.242424242424242 x 100 = 724.24%