-62.13% is the change from 676 to 256
Calculation steps:
[( 256 - 676 ) ÷ 676] x 100 = -62.13%
Formula
Percentage change = [(256 - 676) / 676] x 100
Subtract the new number by the original number
256 - 676 = -420
-420 ÷ 676 = -0.621301775147929
-0.621301775147929 x 100 = -62.13%