290.91% is the change from 231 to 903
Calculation steps:
[( 903 - 231 ) ÷ 231] x 100 = 290.91%
Formula
Percentage change = [(903 - 231) / 231] x 100
Subtract the new number by the original number
903 - 231 = 672
672 ÷ 231 = 2.909090909090909
2.909090909090909 x 100 = 290.91%