When there is an open trade the current profit/loss of the open trade will be shown. The bot uses the BID prices for the calculation of the open trade profit/loss percentages. It also includes the commissions for both trades (Buy and Sell). The commission depends on your exchange settings (generally it will be between -0.15% and -0.20%). The profit/loss is updated every 10 seconds and not on every BID change. The actual result after close of the trade may differ from the last shown profit/loss of the open trade. This can be due to the liquidity/volatility character of the traded coin, lag in the update of the result of the open trade, and etc.
In Live trading if you need to close the open trade manually do it by clicking on theinstead of selling the amount directly on the website of the exchange. Otherwise, later the bot may try to close the trade according to the sell options. If there is enough balance in your account, it will sell it. The manual sell will be executed with a Market sell order.