40.81% is the change from 642 to 904
Calculation steps:
[( 904 - 642 ) ÷ 642] x 100 = 40.81%
Formula
Percentage change = [(904 - 642) / 642] x 100
Subtract the new number by the original number
904 - 642 = 262
262 ÷ 642 = 0.40809968847352024
0.40809968847352024 x 100 = 40.81%