-29.72% is the change from 979 to 688
Calculation steps:
[( 688 - 979 ) ÷ 979] x 100 = -29.72%
Formula
Percentage change = [(688 - 979) / 979] x 100
Subtract the new number by the original number
688 - 979 = -291
-291 ÷ 979 = -0.2972420837589377
-0.2972420837589377 x 100 = -29.72%