-88.68% is the change from 680 to 77
Calculation steps:
[( 77 - 680 ) ÷ 680] x 100 = -88.68%
Formula
Percentage change = [(77 - 680) / 680] x 100
Subtract the new number by the original number
77 - 680 = -603
-603 ÷ 680 = -0.8867647058823529
-0.8867647058823529 x 100 = -88.68%