149.42% is the change from 257 to 641
Calculation steps:
[( 641 - 257 ) ÷ 257] x 100 = 149.42%
Formula
Percentage change = [(641 - 257) / 257] x 100
Subtract the new number by the original number
641 - 257 = 384
384 ÷ 257 = 1.4941634241245136
1.4941634241245136 x 100 = 149.42%