If you're asking the difference, then a proper fraction is when the numerator is smaller than the denominator. And an improper fraction is a fraction bigger than whole or when the numerator is larger than the denominator.
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32323 is an integer and not a fraction: proper or improper.
A proper fraction is a fraction who's numerator is smaller than the denominator. An improper fraction is a fraction who's numerator is larger than or equal to the denominator. 1/2 is a proper fraction. 3/2 is an improper fraction. Now to understand why the improper fraction is larger than the proper fraction, lets split them up. The proper fraction is one half of a whole, whereas the improper fraction is one whole and one half. Basically the proper is one half, and the improper is three halves. In theory, a proper fraction is always less than the whole number under consideration. On the other hand, an improper fraction is either equal to or larger than the whole number under consideration.
9/8 is an improper fraction.
A proper fraction has a numerator that is smaller in magnitude (absolute value) than its denominator. A fraction that does not meet this criterion is called improper.
4/5 is a proper fraction. Proper fractions can't become improper fractions; it wouldn't be proper.