I wrote somewhere, that any ARM gives you 0,02 reduction according to the stats in game. The same with RESIST. When you will change that, so I can see how many DMG is reduced thanks to armor? I thought, that it will come in this patch 
It’s a bit difficult to show that since damage reduction formula is based on how much damage is being done to you. We can estimate it based on the average damage dealt by enemies on whatever level you’re on, but the number will change whenever you navigate floors. I’ll add this to the list of things to look at though!