-37.5% is the change from 680 to 425
Calculation steps:
[( 425 - 680 ) ÷ 680] x 100 = -37.5%
Formula
Percentage change = [(425 - 680) / 680] x 100
Subtract the new number by the original number
425 - 680 = -255
-255 ÷ 680 = -0.375
-0.375 x 100 = -37.5%