7700% is the change from 10 to 780
Calculation steps:
[( 780 - 10 ) ÷ 10] x 100 = 7700%
Formula
Percentage change = [(780 - 10) / 10] x 100
Subtract the new number by the original number
780 - 10 = 770
770 ÷ 10 = 77
77 x 100 = 7700%
Example