8637.5% is the change from 8 to 699
Calculation steps:
[( 699 - 8 ) ÷ 8] x 100 = 8637.5%
Formula
Percentage change = [(699 - 8) / 8] x 100
Subtract the new number by the original number
699 - 8 = 691
691 ÷ 8 = 86.375
86.375 x 100 = 8637.5%
Example