261.87% is the change from 257 to 930
Calculation steps:
[( 930 - 257 ) ÷ 257] x 100 = 261.87%
Formula
Percentage change = [(930 - 257) / 257] x 100
Subtract the new number by the original number
930 - 257 = 673
673 ÷ 257 = 2.6186770428015564
2.6186770428015564 x 100 = 261.87%