A friend asked me how much percentage to share profits with him/her on the trade if i'm right in the stock direction base on technical analysis. If I'm wrong, he/she will take the loss.

This is harsh on the friendship.

Thank you for sharing

I think a meal will do. How will u compensate for the loss. No obligations for taking your advice need to do own diligence

You're suggesting offering TA advice and having your friend share the profits from their trades with you, right? How do you keep track of their earnings in this situation? Did they give you a sum to manage on their behalf, for example, to trade or invest for them? If that's the case, it could get quite complicated from an accounting standpoint, and the responsibility will fall on you to ensure everything is clearly tracked and transparent. On the other hand, if no funds are involved and your friend is simply sharing profits, it places a lot of trust on their integrity to be transparent and honest about what they’ve earned. However, this approach will be neater for you.

Would presume that you're also trading/investing based on your own TA. If so, perhaps consider just taking a fixed token amount from every recommendation made. If you're so "zhun", there is no reason to be hard up on your friend's earnings.