824.24% is the change from 99 to 915
Calculation steps:
[( 915 - 99 ) ÷ 99] x 100 = 824.24%
Formula
Percentage change = [(915 - 99) / 99] x 100
Subtract the new number by the original number
915 - 99 = 816
816 ÷ 99 = 8.242424242424242
8.242424242424242 x 100 = 824.24%