-38.1% is the change from 685 to 424
Calculation steps:
[( 424 - 685 ) ÷ 685] x 100 = -38.1%
Formula
Percentage change = [(424 - 685) / 685] x 100
Subtract the new number by the original number
424 - 685 = -261
-261 ÷ 685 = -0.381021897810219
-0.381021897810219 x 100 = -38.1%