-9.4% is the change from 979 to 887
Calculation steps:
[( 887 - 979 ) ÷ 979] x 100 = -9.4%
Formula
Percentage change = [(887 - 979) / 979] x 100
Subtract the new number by the original number
887 - 979 = -92
-92 ÷ 979 = -0.09397344228804903
-0.09397344228804903 x 100 = -9.4%