Ok, so
We know that the annual per capita consumption of eggs was 496, and it dropped to 255.
So, We need to find the fraction eggs the average person eats in the first year as the average person did in the last year. We are given, per capital consumption of eggs in the first year = 496 and, per capital consumption of eggs in the last year = 255.
Then, earlier year had 496 eggs.
More recent year had 255 eggs.
We can say that in more recent year, the average person ate 0.5 as many eggs as the average person did in the earlier year.
0.5 comes from divide 255/496, that means that the average person ate 0.5 times eggs than the people who ate in the earlier year.