-27.91% is the change from 387 to 279
Calculation steps:
[( 279 - 387 ) ÷ 387] x 100 = -27.91%
Formula
Percentage change = [(279 - 387) / 387] x 100
Subtract the new number by the original number
279 - 387 = -108
-108 ÷ 387 = -0.27906976744186046
-0.27906976744186046 x 100 = -27.91%