-10.23% is the change from 880 to 790
Calculation steps:
[( 790 - 880 ) ÷ 880] x 100 = -10.23%
Formula
Percentage change = [(790 - 880) / 880] x 100
Subtract the new number by the original number
790 - 880 = -90
-90 ÷ 880 = -0.10227272727272728
-0.10227272727272728 x 100 = -10.23%