7700% is the change from 8 to 624
Calculation steps:
[( 624 - 8 ) ÷ 8] x 100 = 7700%
Formula
Percentage change = [(624 - 8) / 8] x 100
Subtract the new number by the original number
624 - 8 = 616
616 ÷ 8 = 77
77 x 100 = 7700%
Example