40.22% is the change from 644 to 903
Calculation steps:
[( 903 - 644 ) ÷ 644] x 100 = 40.22%
Formula
Percentage change = [(903 - 644) / 644] x 100
Subtract the new number by the original number
903 - 644 = 259
259 ÷ 644 = 0.40217391304347827
0.40217391304347827 x 100 = 40.22%