107.42% is the change from 391 to 811
Calculation steps:
[( 811 - 391 ) ÷ 391] x 100 = 107.42%
Formula
Percentage change = [(811 - 391) / 391] x 100
Subtract the new number by the original number
811 - 391 = 420
420 ÷ 391 = 1.0741687979539642
1.0741687979539642 x 100 = 107.42%