-3.97% is the change from 403 to 387
Calculation steps:
[( 387 - 403 ) ÷ 403] x 100 = -3.97%
Formula
Percentage change = [(387 - 403) / 403] x 100
Subtract the new number by the original number
387 - 403 = -16
-16 ÷ 403 = -0.03970223325062035
-0.03970223325062035 x 100 = -3.97%