265.37% is the change from 257 to 939
Calculation steps:
[( 939 - 257 ) ÷ 257] x 100 = 265.37%
Formula
Percentage change = [(939 - 257) / 257] x 100
Subtract the new number by the original number
939 - 257 = 682
682 ÷ 257 = 2.6536964980544746
2.6536964980544746 x 100 = 265.37%