-0.8% is the change from 880 to 873
Calculation steps:
[( 873 - 880 ) ÷ 880] x 100 = -0.8%
Formula
Percentage change = [(873 - 880) / 880] x 100
Subtract the new number by the original number
873 - 880 = -7
-7 ÷ 880 = -0.007954545454545454
-0.007954545454545454 x 100 = -0.8%