154.3% is the change from 256 to 651
Calculation steps:
[( 651 - 256 ) ÷ 256] x 100 = 154.3%
Formula
Percentage change = [(651 - 256) / 256] x 100
Subtract the new number by the original number
651 - 256 = 395
395 ÷ 256 = 1.54296875
1.54296875 x 100 = 154.3%