-13.28% is the change from 256 to 222
Calculation steps:
[( 222 - 256 ) ÷ 256] x 100 = -13.28%
Formula
Percentage change = [(222 - 256) / 256] x 100
Subtract the new number by the original number
222 - 256 = -34
-34 ÷ 256 = -0.1328125
-0.1328125 x 100 = -13.28%