-31.87% is the change from 979 to 667
Calculation steps:
[( 667 - 979 ) ÷ 979] x 100 = -31.87%
Formula
Percentage change = [(667 - 979) / 979] x 100
Subtract the new number by the original number
667 - 979 = -312
-312 ÷ 979 = -0.31869254341164455
-0.31869254341164455 x 100 = -31.87%