-37.17% is the change from 678 to 426
Calculation steps:
[( 426 - 678 ) ÷ 678] x 100 = -37.17%
Formula
Percentage change = [(426 - 678) / 678] x 100
Subtract the new number by the original number
426 - 678 = -252
-252 ÷ 678 = -0.37168141592920356
-0.37168141592920356 x 100 = -37.17%