168.36% is the change from 256 to 687
Calculation steps:
[( 687 - 256 ) ÷ 256] x 100 = 168.36%
Formula
Percentage change = [(687 - 256) / 256] x 100
Subtract the new number by the original number
687 - 256 = 431
431 ÷ 256 = 1.68359375
1.68359375 x 100 = 168.36%