-55.97% is the change from 879 to 387
Calculation steps:
[( 387 - 879 ) ÷ 879] x 100 = -55.97%
Formula
Percentage change = [(387 - 879) / 879] x 100
Subtract the new number by the original number
387 - 879 = -492
-492 ÷ 879 = -0.5597269624573379
-0.5597269624573379 x 100 = -55.97%