-29.87% is the change from 981 to 688
Calculation steps:
[( 688 - 981 ) ÷ 981] x 100 = -29.87%
Formula
Percentage change = [(688 - 981) / 981] x 100
Subtract the new number by the original number
688 - 981 = -293
-293 ÷ 981 = -0.29867482161060144
-0.29867482161060144 x 100 = -29.87%