-7.53% is the change from 877 to 811
Calculation steps:
[( 811 - 877 ) ÷ 877] x 100 = -7.53%
Formula
Percentage change = [(811 - 877) / 877] x 100
Subtract the new number by the original number
811 - 877 = -66
-66 ÷ 877 = -0.07525655644241733
-0.07525655644241733 x 100 = -7.53%