22.31% is the change from 399 to 488
Calculation steps:
[( 488 - 399 ) ÷ 399] x 100 = 22.31%
Formula
Percentage change = [(488 - 399) / 399] x 100
Subtract the new number by the original number
488 - 399 = 89
89 ÷ 399 = 0.22305764411027568
0.22305764411027568 x 100 = 22.31%