I am guessing without communication from Blues this would be difficult to test, however, just the fact that the game defines things to two decimals, it is highly likely that the combat table would be a on a 1-10000 roll or something crafty like that.
Well, if the combat table uses a 100 sided die to determine things, then it has to use whole percentages.
Regarding rounding down, I believe the game rounds "ratings" down to the nearest "point". So the actual rounding occurs before the percentage is calculated.
The beast is getting hungrier.