No one knows. They have not decided how to decide what the fees will be. I suspect it will end up being about 1% at the end of the day.
Woa.... a 1% bounty on network transactions could turn out to be quite a bit of dough even with a modest 10% turnover of BTC circulation per week. That comes out to 40+ BTC/block.
That's quite a stretch from where we currently are (about 30 BTC per day):
https://blockchain.info/charts/transaction-feesThere does seem to be at least some correlation between fee amounts and the exchange rate of BTC into government fiat. So if the exchange rate begins climbing again, perhaps we will see a comparable boost in transaction fees again.