-8.17% is the change from 979 to 899
Calculation steps:
[( 899 - 979 ) ÷ 979] x 100 = -8.17%
Formula
Percentage change = [(899 - 979) / 979] x 100
Subtract the new number by the original number
899 - 979 = -80
-80 ÷ 979 = -0.08171603677221655
-0.08171603677221655 x 100 = -8.17%