How to deal with the sum of rounded percentage not being 100?

Suppose we have a list of items with an integer:

USA:       3 people
Australia: 2 people
Germany:   2 people

If we calculate the percentage of each value against the sum over the whole list, we get:

USA:       3/(3+2+2)*100 = 42.857...%
Australia: 2/(3+2+2)*100 = 28.571...%
Germany:   2/(3+2+2)*100 = 28.571...%

and if we round it, we get:

USA:       43%
Australia: 29%
Germany:   29%

The sum 43+29+29 = 101 is not 100, and it looks a little bit strange to the user of the software. How would you solve this problem?