-87.11% is the change from 256 to 33
Calculation steps:
[( 33 - 256 ) ÷ 256] x 100 = -87.11%
Formula
Percentage change = [(33 - 256) / 256] x 100
Subtract the new number by the original number
33 - 256 = -223
-223 ÷ 256 = -0.87109375
-0.87109375 x 100 = -87.11%