Fist of all please refrain from obvious answers we all know that it goes up when PEW PEW and down when RAT.
Im and most of the comunity whud realy want to know what math is behind this. Cause its not this simple we just had 75 kills in system in big battle and BRM lowered 2% from 95 to 93. !! YES LOWERED!!.
So can somebody explan what is a driving mechanic about it ? Isk lost / rated ? size of the ships lost ? Its obviousli not numbers of killed ships cause we whud not have this topic.