KEYWORDS: compare, figure
A be half of B
description of A, (which was) half of B.
The number of women who played football was (only) half of that of men, at 300 and 620.
The number of women who played football in 2000 was 600, (which was) half of the figure for men.
The number of men who played football in 2000 was 1300. The figure for women, on the other hand, was only half of that.