-20% National Idea
-50% Humanism
-10% Humanism + Diplomatic Policy
-10% Humanism + Plutocratic Policy
-10% Enlightened Despotism
So the only real trick here is becoming a Republic (I recommend the English Civil War), taking Plutocratic, and then tanking Republican Tradition to become a Monarchy again. I am showing it off here using the console but my friend is attempting it in practice in our multiplayer game.
-50% Humanism
-10% Humanism + Diplomatic Policy
-10% Humanism + Plutocratic Policy
-10% Enlightened Despotism
So the only real trick here is becoming a Republic (I recommend the English Civil War), taking Plutocratic, and then tanking Republican Tradition to become a Monarchy again. I am showing it off here using the console but my friend is attempting it in practice in our multiplayer game.