Python create order from smaller packages

The input is an integer that specifies the amount to be ordered. There are predefined package sizes that have to be used to create that order.

e.g.

Packs
3 for $5
5 for $9
9 for $16

for an input order 13 the output should be:

 2x5 + 1x3

So far I've the following approach

remaining_order = 13
package_numbers = [9,5,3]
required_packages = []

while remaining_order > 0:
    found = False
    for pack_num in package_numbers:
        if pack_num <= remaining_order:
            required_packages.append(pack_num)
            remaining_order -= pack_num
            found = True
            break

    if not found:
        break

But this will lead to the wrong result

1x9 + 1x3
remaining: 1

from Python create order from smaller packages