We have:
1. Initial balance 1000000$
2. First deal with absolute profit -3094$

Questions:
1. What does mean column "Profit,%" ?
If it is profit in percents of current balance - then it is wrong, it must be -0.3%
2. How to calculate "Profit,%" in manual mode. Where i can find calculation formula?

Hi Maxim,

QUOTE:
If it is profit in percents of current balance - then it is wrong, it must be -0.3%

For Equity trading it must but not in this case. The "Si..." is a USD/RUB futures contract on RTS exchange. Clearly you have defined the symbol as Futures. In Futures mode it's different. A loss of 216 ticks in the instrument (26460-26244) divided by the entry price and multiplied by 100 gives us -0.816%. Don't forget to subtract commission and you'll get -0.84%. Voila.

QUOTE:
1. What does mean column "Profit,%" ?

Like I already suggested earlier today, the place to look up the built-in performance metrics such as Profit % is still the User Guide > Preferences > Performance Visualizers > Trades.