40.84% is the change from 644 to 907
Calculation steps:
[( 907 - 644 ) ÷ 644] x 100 = 40.84%
Formula
Percentage change = [(907 - 644) / 644] x 100
Subtract the new number by the original number
907 - 644 = 263
263 ÷ 644 = 0.4083850931677019
0.4083850931677019 x 100 = 40.84%