-55.87% is the change from 877 to 387
Calculation steps:
[( 387 - 877 ) ÷ 877] x 100 = -55.87%
Formula
Percentage change = [(387 - 877) / 877] x 100
Subtract the new number by the original number
387 - 877 = -490
-490 ÷ 877 = -0.5587229190421893
-0.5587229190421893 x 100 = -55.87%