40.6% is the change from 638 to 897
Calculation steps:
[( 897 - 638 ) ÷ 638] x 100 = 40.6%
Formula
Percentage change = [(897 - 638) / 638] x 100
Subtract the new number by the original number
897 - 638 = 259
259 ÷ 638 = 0.4059561128526646
0.4059561128526646 x 100 = 40.6%