159.38% is the change from 256 to 664
Calculation steps:
[( 664 - 256 ) ÷ 256] x 100 = 159.38%
Formula
Percentage change = [(664 - 256) / 256] x 100
Subtract the new number by the original number
664 - 256 = 408
408 ÷ 256 = 1.59375
1.59375 x 100 = 159.38%