[MagnoliasFM]

You're right it'd be subjective. Our lives are lived with imperfect information and our knowledges are all different, so everyone's odds would be different based on what they know. For me, the odds are 100% God exists. But for you they may only be less than 1%. Our perceived odds change as our webs of knowledge change.

The "true" chances that God exists if one were to know everything would either be 100% or 0%. Either he always existed or never did.

So if you want to eyeball the odds, you can only speak for yourself and everyone else who has the same beliefs/knowledge as you.

What other people believe and how many of them there are is not necessarily correlational to the truth. Just look at how many people believe they are "winning" poker players.