10087.5% is the change from 8 to 815
Calculation steps:
[( 815 - 8 ) ÷ 8] x 100 = 10087.5%
Formula
Percentage change = [(815 - 8) / 8] x 100
Subtract the new number by the original number
815 - 8 = 807
807 ÷ 8 = 100.875
100.875 x 100 = 10087.5%
Example