-9.38% is the change from 256 to 232
Calculation steps:
[( 232 - 256 ) ÷ 256] x 100 = -9.38%
Formula
Percentage change = [(232 - 256) / 256] x 100
Subtract the new number by the original number
232 - 256 = -24
-24 ÷ 256 = -0.09375
-0.09375 x 100 = -9.38%