162.11% is the change from 256 to 671
Calculation steps:
[( 671 - 256 ) ÷ 256] x 100 = 162.11%
Formula
Percentage change = [(671 - 256) / 256] x 100
Subtract the new number by the original number
671 - 256 = 415
415 ÷ 256 = 1.62109375
1.62109375 x 100 = 162.11%