6877.78% is the change from 9 to 628
Calculation steps:
[( 628 - 9 ) ÷ 9] x 100 = 6877.78%
Formula
Percentage change = [(628 - 9) / 9] x 100
Subtract the new number by the original number
628 - 9 = 619
619 ÷ 9 = 68.77777777777777
68.77777777777777 x 100 = 6877.78%