40.59% is the change from 643 to 904
Calculation steps:
[( 904 - 643 ) ÷ 643] x 100 = 40.59%
Formula
Percentage change = [(904 - 643) / 643] x 100
Subtract the new number by the original number
904 - 643 = 261
261 ÷ 643 = 0.4059097978227061
0.4059097978227061 x 100 = 40.59%