-18.38% is the change from 680 to 555
Calculation steps:
[( 555 - 680 ) ÷ 680] x 100 = -18.38%
Formula
Percentage change = [(555 - 680) / 680] x 100
Subtract the new number by the original number
555 - 680 = -125
-125 ÷ 680 = -0.18382352941176472
-0.18382352941176472 x 100 = -18.38%