Find the highest number in a set to be rounded down, and round it up instead

As the title describes, I have a set of objects - call them Allocations - which contain a description & a number. All numbers in the set add up to 100%, but for display purpose I sometimes round to a whole percent. In some edge cases, having rounded the numbers I end up with 99%.

Example:

Description  | Actual | Rounded
===============================
Allocation A | 65.23% | 65% 
Allocation B | 25.40% | 25%
Allocation C | 7.95%  | 8%
Allocation D | 1.42%  | 1%
===============================
Total        | 100%   | 99% (Bad!)

The requested solution, which is imperfect but will do, is to find the highest one to be rounded down, and round it up instead. In the example above, 1.42% would become 2% when rounded. Edit: By "Highest one to be rounded down" I mean the one which is being rounded the furthest. Hence 1.42% is being rounded down by 0.42 whereas the 65.23 is only being rounded down 0.23

So now the code, I have a class

public class Allocation
{
  public string Description {get;set;}
  public doubel Percentage {get;set;}
}

And these are held in an IEnumerable. So, potentially using LINQ, how can I determine which one is the one to round up. Or more specifically, how can I generate a new IEnumerable with the numbers rounded.

If anyone has any other suggestion for always making rounded percentage always equate to 100% that would be even better!