40.68% is the change from 644 to 906
Calculation steps:
[( 906 - 644 ) ÷ 644] x 100 = 40.68%
Formula
Percentage change = [(906 - 644) / 644] x 100
Subtract the new number by the original number
906 - 644 = 262
262 ÷ 644 = 0.40683229813664595
0.40683229813664595 x 100 = 40.68%