22.06% is the change from 399 to 487
Calculation steps:
[( 487 - 399 ) ÷ 399] x 100 = 22.06%
Formula
Percentage change = [(487 - 399) / 399] x 100
Subtract the new number by the original number
487 - 399 = 88
88 ÷ 399 = 0.22055137844611528
0.22055137844611528 x 100 = 22.06%