-0.11% is the change from 878 to 877
Calculation steps:
[( 877 - 878 ) ÷ 878] x 100 = -0.11%
Formula
Percentage change = [(877 - 878) / 878] x 100
Subtract the new number by the original number
877 - 878 = -1
-1 ÷ 878 = -0.0011389521640091116
-0.0011389521640091116 x 100 = -0.11%