211.72% is the change from 256 to 798
Calculation steps:
[( 798 - 256 ) ÷ 256] x 100 = 211.72%
Formula
Percentage change = [(798 - 256) / 256] x 100
Subtract the new number by the original number
798 - 256 = 542
542 ÷ 256 = 2.1171875
2.1171875 x 100 = 211.72%