The percentage of margin in trading?

Hi, dear I want to ask the safest percentage you can be using to trade whether in a demo account or live account. Which is advisable 50% or 10% or 20% please help.What i mean is if it is advisable to be using over 30% of my equity to trade. Thanks a lot.

If you are trading live most would say to not put more than 2% of your equity at risk meaning that if you are trading EUR/USD and you are going long at 1.4500 with a stop loss at 1.4450 (50 pips) you would then do a simple calculation so that the 50 pips you are putting at risk is equivalent to 2% of your equity. However as you are just starting off maybe you should consider putting less than 2% of equity at risk on any given trade. If you are going live for the first time maybe 0.1% is a good place to start. Better to start small and increase with success. Hope that helps.