39.81% is the change from 648 to 906
Calculation steps:
[( 906 - 648 ) ÷ 648] x 100 = 39.81%
Formula
Percentage change = [(906 - 648) / 648] x 100
Subtract the new number by the original number
906 - 648 = 258
258 ÷ 648 = 0.39814814814814814
0.39814814814814814 x 100 = 39.81%