171.09% is the change from 256 to 694
Calculation steps:
[( 694 - 256 ) ÷ 256] x 100 = 171.09%
Formula
Percentage change = [(694 - 256) / 256] x 100
Subtract the new number by the original number
694 - 256 = 438
438 ÷ 256 = 1.7109375
1.7109375 x 100 = 171.09%