261.2% is the change from 250 to 903
Calculation steps:
[( 903 - 250 ) ÷ 250] x 100 = 261.2%
Formula
Percentage change = [(903 - 250) / 250] x 100
Subtract the new number by the original number
903 - 250 = 653
653 ÷ 250 = 2.612
2.612 x 100 = 261.2%
Example