263.42% is the change from 257 to 934
Calculation steps:
[( 934 - 257 ) ÷ 257] x 100 = 263.42%
Formula
Percentage change = [(934 - 257) / 257] x 100
Subtract the new number by the original number
934 - 257 = 677
677 ÷ 257 = 2.6342412451361867
2.6342412451361867 x 100 = 263.42%