257.2% is the change from 257 to 918
Calculation steps:
[( 918 - 257 ) ÷ 257] x 100 = 257.2%
Formula
Percentage change = [(918 - 257) / 257] x 100
Subtract the new number by the original number
918 - 257 = 661
661 ÷ 257 = 2.5719844357976656
2.5719844357976656 x 100 = 257.2%