35.59% is the change from 399 to 541
Calculation steps:
[( 541 - 399 ) ÷ 399] x 100 = 35.59%
Formula
Percentage change = [(541 - 399) / 399] x 100
Subtract the new number by the original number
541 - 399 = 142
142 ÷ 399 = 0.3558897243107769
0.3558897243107769 x 100 = 35.59%