-21.66% is the change from 877 to 687
Calculation steps:
[( 687 - 877 ) ÷ 877] x 100 = -21.66%
Formula
Percentage change = [(687 - 877) / 877] x 100
Subtract the new number by the original number
687 - 877 = -190
-190 ÷ 877 = -0.21664766248574688
-0.21664766248574688 x 100 = -21.66%