108.59% is the change from 256 to 534
Calculation steps:
[( 534 - 256 ) ÷ 256] x 100 = 108.59%
Formula
Percentage change = [(534 - 256) / 256] x 100
Subtract the new number by the original number
534 - 256 = 278
278 ÷ 256 = 1.0859375
1.0859375 x 100 = 108.59%