792.21% is the change from 77 to 687
Calculation steps:
[( 687 - 77 ) ÷ 77] x 100 = 792.21%
Formula
Percentage change = [(687 - 77) / 77] x 100
Subtract the new number by the original number
687 - 77 = 610
610 ÷ 77 = 7.922077922077922
7.922077922077922 x 100 = 792.21%