-11.91% is the change from 680 to 599
Calculation steps:
[( 599 - 680 ) ÷ 680] x 100 = -11.91%
Formula
Percentage change = [(599 - 680) / 680] x 100
Subtract the new number by the original number
599 - 680 = -81
-81 ÷ 680 = -0.11911764705882352
-0.11911764705882352 x 100 = -11.91%