40.03% is the change from 647 to 906
Calculation steps:
[( 906 - 647 ) ÷ 647] x 100 = 40.03%
Formula
Percentage change = [(906 - 647) / 647] x 100
Subtract the new number by the original number
906 - 647 = 259
259 ÷ 647 = 0.40030911901081917
0.40030911901081917 x 100 = 40.03%