-61.91% is the change from 680 to 259
Calculation steps:
[( 259 - 680 ) ÷ 680] x 100 = -61.91%
Formula
Percentage change = [(259 - 680) / 680] x 100
Subtract the new number by the original number
259 - 680 = -421
-421 ÷ 680 = -0.6191176470588236
-0.6191176470588236 x 100 = -61.91%