-3.76% is the change from 399 to 384
Calculation steps:
[( 384 - 399 ) ÷ 399] x 100 = -3.76%
Formula
Percentage change = [(384 - 399) / 399] x 100
Subtract the new number by the original number
384 - 399 = -15
-15 ÷ 399 = -0.03759398496240601
-0.03759398496240601 x 100 = -3.76%