8187.5% is the change from 8 to 663
Calculation steps:
[( 663 - 8 ) ÷ 8] x 100 = 8187.5%
Formula
Percentage change = [(663 - 8) / 8] x 100
Subtract the new number by the original number
663 - 8 = 655
655 ÷ 8 = 81.875
81.875 x 100 = 8187.5%
Example