755.56% is the change from 9 to 77
Calculation steps:
[( 77 - 9 ) ÷ 9] x 100 = 755.56%
Formula
Percentage change = [(77 - 9) / 9] x 100
Subtract the new number by the original number
77 - 9 = 68
68 ÷ 9 = 7.555555555555555
7.555555555555555 x 100 = 755.56%