-66.03% is the change from 680 to 231
Calculation steps:
[( 231 - 680 ) ÷ 680] x 100 = -66.03%
Formula
Percentage change = [(231 - 680) / 680] x 100
Subtract the new number by the original number
231 - 680 = -449
-449 ÷ 680 = -0.6602941176470588
-0.6602941176470588 x 100 = -66.03%