If I get what you mean, half of 1/2 cup is 1/4 cup...Mathematically, 1/2 of 1/2 cup = 1/2 * 1/2 = 1/4.
What Is Half Of 1/2 Cup?
1/4 cup
1/4 cup
1/2 of a cup is like 50%, half of 1/2 is 1/4 which is like 25%.