109.36% is the change from 406 to 850
Calculation steps:
[( 850 - 406 ) ÷ 406] x 100 = 109.36%
Formula
Percentage change = [(850 - 406) / 406] x 100
Subtract the new number by the original number
850 - 406 = 444
444 ÷ 406 = 1.0935960591133005
1.0935960591133005 x 100 = 109.36%