-82.03% is the change from 256 to 46
Calculation steps:
[( 46 - 256 ) ÷ 256] x 100 = -82.03%
Formula
Percentage change = [(46 - 256) / 256] x 100
Subtract the new number by the original number
46 - 256 = -210
-210 ÷ 256 = -0.8203125
-0.8203125 x 100 = -82.03%