-40.44% is the change from 680 to 405
Calculation steps:
[( 405 - 680 ) ÷ 680] x 100 = -40.44%
Formula
Percentage change = [(405 - 680) / 680] x 100
Subtract the new number by the original number
405 - 680 = -275
-275 ÷ 680 = -0.40441176470588236
-0.40441176470588236 x 100 = -40.44%