-25.88% is the change from 680 to 504
Calculation steps:
[( 504 - 680 ) ÷ 680] x 100 = -25.88%
Formula
Percentage change = [(504 - 680) / 680] x 100
Subtract the new number by the original number
504 - 680 = -176
-176 ÷ 680 = -0.25882352941176473
-0.25882352941176473 x 100 = -25.88%