-86.33% is the change from 256 to 35
Calculation steps:
[( 35 - 256 ) ÷ 256] x 100 = -86.33%
Formula
Percentage change = [(35 - 256) / 256] x 100
Subtract the new number by the original number
35 - 256 = -221
-221 ÷ 256 = -0.86328125
-0.86328125 x 100 = -86.33%