-28.53% is the change from 680 to 486
Calculation steps:
[( 486 - 680 ) ÷ 680] x 100 = -28.53%
Formula
Percentage change = [(486 - 680) / 680] x 100
Subtract the new number by the original number
486 - 680 = -194
-194 ÷ 680 = -0.2852941176470588
-0.2852941176470588 x 100 = -28.53%