-35.59% is the change from 680 to 438
Calculation steps:
[( 438 - 680 ) ÷ 680] x 100 = -35.59%
Formula
Percentage change = [(438 - 680) / 680] x 100
Subtract the new number by the original number
438 - 680 = -242
-242 ÷ 680 = -0.3558823529411765
-0.3558823529411765 x 100 = -35.59%