40.65% is the change from 642 to 903
Calculation steps:
[( 903 - 642 ) ÷ 642] x 100 = 40.65%
Formula
Percentage change = [(903 - 642) / 642] x 100
Subtract the new number by the original number
903 - 642 = 261
261 ÷ 642 = 0.40654205607476634
0.40654205607476634 x 100 = 40.65%