108.07% is the change from 409 to 851
Calculation steps:
[( 851 - 409 ) ÷ 409] x 100 = 108.07%
Formula
Percentage change = [(851 - 409) / 409] x 100
Subtract the new number by the original number
851 - 409 = 442
442 ÷ 409 = 1.080684596577017
1.080684596577017 x 100 = 108.07%