-28.09% is the change from 356 to 256
Calculation steps:
[( 256 - 356 ) ÷ 356] x 100 = -28.09%
Formula
Percentage change = [(256 - 356) / 356] x 100
Subtract the new number by the original number
256 - 356 = -100
-100 ÷ 356 = -0.2808988764044944
-0.2808988764044944 x 100 = -28.09%