-18.75% is the change from 256 to 208
Calculation steps:
[( 208 - 256 ) ÷ 256] x 100 = -18.75%
Formula
Percentage change = [(208 - 256) / 256] x 100
Subtract the new number by the original number
208 - 256 = -48
-48 ÷ 256 = -0.1875
-0.1875 x 100 = -18.75%