I don't want to be that greedy, for daily trading hard to say probably around 2%-5% if you are that lucky and good.
Even these percentages are on the higher side for me. Only an extremely small number of traders manage to end their days with a profit in this market, and even smaller number manages to make around 2-3% per day.
People quite often think that making like 2% per day is low and thus doable, but it really isn't. 2% per day is still +700% per year. If you manage to do that, you'll be a millionaire eventually without a serious starting capital.
I see around the forum how people make fun of 1% per day, and act like they can do that easily, but I have yet to see anyone be able to consistently generate 1% per day. Easy money doesn't exist, not even in this market.