-17.57% is the change from 387 to 319
Calculation steps:
[( 319 - 387 ) ÷ 387] x 100 = -17.57%
Formula
Percentage change = [(319 - 387) / 387] x 100
Subtract the new number by the original number
319 - 387 = -68
-68 ÷ 387 = -0.17571059431524547
-0.17571059431524547 x 100 = -17.57%