Maximal Deposit Utilization Rate

 
Hello, what is maximal deposit utilization rate? There is  attach files. I took part in Liteforex demo contest. They let me trade with intial deposit 5000usd. You can see my trade history in one of these attach files. Every time i open trades with big lots sizes, my maximal deposit utilization rate is increasing. And they showed me a formula how they are calculating it. But i really don't understand it, and i tried so many times and calculate myself. So if you have any example of calculating maximal deposit utilization rate, please let me know. Thank you.
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