How i can calculate lotsize on the base of 2% from deposit if my deposit is 100$ ?

 
Hi
If i have one account with deposit of 100$ and open one order with StopLoss of 25pip in EURUSD
how i can calculate lotsize on the base of 2% from total deposit ?
thanks
 
https://forum.mql4.com/search/calculate%20risk%20lot%20size
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