-15.32% is the change from 979 to 829
Calculation steps:
[( 829 - 979 ) ÷ 979] x 100 = -15.32%
Formula
Percentage change = [(829 - 979) / 979] x 100
Subtract the new number by the original number
829 - 979 = -150
-150 ÷ 979 = -0.15321756894790603
-0.15321756894790603 x 100 = -15.32%