-29.83% is the change from 979 to 687
Calculation steps:
[( 687 - 979 ) ÷ 979] x 100 = -29.83%
Formula
Percentage change = [(687 - 979) / 979] x 100
Subtract the new number by the original number
687 - 979 = -292
-292 ÷ 979 = -0.2982635342185904
-0.2982635342185904 x 100 = -29.83%