-29.8% is the change from 980 to 688
Calculation steps:
[( 688 - 980 ) ÷ 980] x 100 = -29.8%
Formula
Percentage change = [(688 - 980) / 980] x 100
Subtract the new number by the original number
688 - 980 = -292
-292 ÷ 980 = -0.2979591836734694
-0.2979591836734694 x 100 = -29.8%