So I've got a list `announceList` which have a list of `Announces`, I'm trying to sort the list ascending for a percentage value, so if I got the list this way:

```
Announce1 - 20.10%
Announce2 - 20.54%
Announce3 - 27.50%
Announce4 - 76.36%

```

After the sorting I want to have the list like this: 

```
Announce4 - 76.36%
Announce3 - 27.50%
Announce2 - 20.54%
Announce1 - 20.10%

```

The method I'm using is this:

```
Collections.sort(announceList, new Comparator<Announce>() {
   @Override
   public int compare(Announce o1, Announce o2) {
       int i1 = o1.getMatchPercentage().intValue();
       int i2 = o2.getMatchPercentage().intValue();
       return Integer.compare(i1, i2);
   }
});

adapter.setAnnounceList(announceList);
adapter.notifyDataSetChanged();

```

But I don't get the list how I wanted, please if you know what I'm I doing wrong tell me, any help will be apreciated, thank you.