107.52% is the change from 399 to 828
Calculation steps:
[( 828 - 399 ) ÷ 399] x 100 = 107.52%
Formula
Percentage change = [(828 - 399) / 399] x 100
Subtract the new number by the original number
828 - 399 = 429
429 ÷ 399 = 1.0751879699248121
1.0751879699248121 x 100 = 107.52%