8.98% is the change from 256 to 279
Calculation steps:
[( 279 - 256 ) ÷ 256] x 100 = 8.98%
Formula
Percentage change = [(279 - 256) / 256] x 100
Subtract the new number by the original number
279 - 256 = 23
23 ÷ 256 = 0.08984375
0.08984375 x 100 = 8.98%