278.52% is the change from 256 to 969
Calculation steps:
[( 969 - 256 ) ÷ 256] x 100 = 278.52%
Formula
Percentage change = [(969 - 256) / 256] x 100
Subtract the new number by the original number
969 - 256 = 713
713 ÷ 256 = 2.78515625
2.78515625 x 100 = 278.52%