-6.16% is the change from 877 to 823
Calculation steps:
[( 823 - 877 ) ÷ 877] x 100 = -6.16%
Formula
Percentage change = [(823 - 877) / 877] x 100
Subtract the new number by the original number
823 - 877 = -54
-54 ÷ 877 = -0.06157354618015964
-0.06157354618015964 x 100 = -6.16%