103.26% is the change from 399 to 811
Calculation steps:
[( 811 - 399 ) ÷ 399] x 100 = 103.26%
Formula
Percentage change = [(811 - 399) / 399] x 100
Subtract the new number by the original number
811 - 399 = 412
412 ÷ 399 = 1.0325814536340852
1.0325814536340852 x 100 = 103.26%