76900% is the change from 1 to 770
Calculation steps:
[( 770 - 1 ) ÷ 1] x 100 = 76900%
Formula
Percentage change = [(770 - 1) / 1] x 100
Subtract the new number by the original number
770 - 1 = 769
769 ÷ 1 = 769
769 x 100 = 76900%
Example