169.53% is the change from 256 to 690
Calculation steps:
[( 690 - 256 ) ÷ 256] x 100 = 169.53%
Formula
Percentage change = [(690 - 256) / 256] x 100
Subtract the new number by the original number
690 - 256 = 434
434 ÷ 256 = 1.6953125
1.6953125 x 100 = 169.53%