amrod
Warlord
+5 meas is the boost from the civics that you have. The feudal combo gives you total of +5.
-8 means that you had several anarchy turns in the past. Every anarchy turn costs you -1 to -3 stability points depending on the size of your Empire (small Empires have a small penalty).
Thanks, that really helps! Though it's a bit hard - I can't change civics without anarchy, and changes are needed to set up civics that improve stability.
I though I've read somewhere that I could change without anarchy in a golden age, but apparently didn't work when tried out. Or maybe it was some mod? <getting old and forgetful>