-40.15% is the change from 680 to 407
Calculation steps:
[( 407 - 680 ) ÷ 680] x 100 = -40.15%
Formula
Percentage change = [(407 - 680) / 680] x 100
Subtract the new number by the original number
407 - 680 = -273
-273 ÷ 680 = -0.40147058823529413
-0.40147058823529413 x 100 = -40.15%