105.01% is the change from 399 to 818
Calculation steps:
[( 818 - 399 ) ÷ 399] x 100 = 105.01%
Formula
Percentage change = [(818 - 399) / 399] x 100
Subtract the new number by the original number
818 - 399 = 419
419 ÷ 399 = 1.050125313283208
1.050125313283208 x 100 = 105.01%