106.39% is the change from 407 to 840
Calculation steps:
[( 840 - 407 ) ÷ 407] x 100 = 106.39%
Formula
Percentage change = [(840 - 407) / 407] x 100
Subtract the new number by the original number
840 - 407 = 433
433 ÷ 407 = 1.0638820638820639
1.0638820638820639 x 100 = 106.39%