-7.15% is the change from 979 to 909
Calculation steps:
[( 909 - 979 ) ÷ 979] x 100 = -7.15%
Formula
Percentage change = [(909 - 979) / 979] x 100
Subtract the new number by the original number
909 - 979 = -70
-70 ÷ 979 = -0.07150153217568948
-0.07150153217568948 x 100 = -7.15%