-4.91% is the change from 407 to 387
Calculation steps:
[( 387 - 407 ) ÷ 407] x 100 = -4.91%
Formula
Percentage change = [(387 - 407) / 407] x 100
Subtract the new number by the original number
387 - 407 = -20
-20 ÷ 407 = -0.04914004914004914
-0.04914004914004914 x 100 = -4.91%