-11.33% is the change from 256 to 227
Calculation steps:
[( 227 - 256 ) ÷ 256] x 100 = -11.33%
Formula
Percentage change = [(227 - 256) / 256] x 100
Subtract the new number by the original number
227 - 256 = -29
-29 ÷ 256 = -0.11328125
-0.11328125 x 100 = -11.33%