Answer
37.5 % of diet
Step-by-step explanation
Fat provides 9 calories per gram.
so,
1 g = 9 calories and 80 g of fat = 720 calories.
Jessi consumes a diet consisting of total 1920 calories.
Percent of jessi's diet which comes from fat is,
( 720 / 1920 ) * 100 %
= ( 3 / 8 ) * 100 %
= 37.5 %
(Assuming diet is total of 1920 cal but if its 1920 Kcal then multiply 1920 * 1000 and then divide it by 720)