687.21% is the change from 86 to 677
Calculation steps:
[( 677 - 86 ) ÷ 86] x 100 = 687.21%
Formula
Percentage change = [(677 - 86) / 86] x 100
Subtract the new number by the original number
677 - 86 = 591
591 ÷ 86 = 6.872093023255814
6.872093023255814 x 100 = 687.21%