-11.8% is the change from 873 to 770
Calculation steps:
[( 770 - 873 ) ÷ 873] x 100 = -11.8%
Formula
Percentage change = [(770 - 873) / 873] x 100
Subtract the new number by the original number
770 - 873 = -103
-103 ÷ 873 = -0.11798396334478808
-0.11798396334478808 x 100 = -11.8%