-23.49% is the change from 877 to 671
Calculation steps:
[( 671 - 877 ) ÷ 877] x 100 = -23.49%
Formula
Percentage change = [(671 - 877) / 877] x 100
Subtract the new number by the original number
671 - 877 = -206
-206 ÷ 877 = -0.2348916761687571
-0.2348916761687571 x 100 = -23.49%