8000% is the change from 8 to 648
Calculation steps:
[( 648 - 8 ) ÷ 8] x 100 = 8000%
Formula
Percentage change = [(648 - 8) / 8] x 100
Subtract the new number by the original number
648 - 8 = 640
640 ÷ 8 = 80
80 x 100 = 8000%
Example