-8.99% is the change from 979 to 891
Calculation steps:
[( 891 - 979 ) ÷ 979] x 100 = -8.99%
Formula
Percentage change = [(891 - 979) / 979] x 100
Subtract the new number by the original number
891 - 979 = -88
-88 ÷ 979 = -0.0898876404494382
-0.0898876404494382 x 100 = -8.99%