? ¿? ¿? 🤔

I'm relatively new to trading.18 months. can someone tell me pls how the percentage is calculated and what it translates to. I made 1 deposits then 0.4%withdrawal in the time frame just to test transaction speed I also made approximately 250 trades in the time frame. at what percentage should I keep my pnl to make a reasonable return on my investment ? thanks for your time