-4.56% is the change from 877 to 837
Calculation steps:
[( 837 - 877 ) ÷ 877] x 100 = -4.56%
Formula
Percentage change = [(837 - 877) / 877] x 100
Subtract the new number by the original number
837 - 877 = -40
-40 ÷ 877 = -0.04561003420752566
-0.04561003420752566 x 100 = -4.56%