252.92% is the change from 257 to 907
Calculation steps:
[( 907 - 257 ) ÷ 257] x 100 = 252.92%
Formula
Percentage change = [(907 - 257) / 257] x 100
Subtract the new number by the original number
907 - 257 = 650
650 ÷ 257 = 2.529182879377432
2.529182879377432 x 100 = 252.92%