-25.44% is the change from 680 to 507
Calculation steps:
[( 507 - 680 ) ÷ 680] x 100 = -25.44%
Formula
Percentage change = [(507 - 680) / 680] x 100
Subtract the new number by the original number
507 - 680 = -173
-173 ÷ 680 = -0.25441176470588234
-0.25441176470588234 x 100 = -25.44%