47.12% is the change from 399 to 587
Calculation steps:
[( 587 - 399 ) ÷ 399] x 100 = 47.12%
Formula
Percentage change = [(587 - 399) / 399] x 100
Subtract the new number by the original number
587 - 399 = 188
188 ÷ 399 = 0.47117794486215536
0.47117794486215536 x 100 = 47.12%