159.77% is the change from 256 to 665
Calculation steps:
[( 665 - 256 ) ÷ 256] x 100 = 159.77%
Formula
Percentage change = [(665 - 256) / 256] x 100
Subtract the new number by the original number
665 - 256 = 409
409 ÷ 256 = 1.59765625
1.59765625 x 100 = 159.77%