Forex Trading Leverage 400 1

Leverage investment in forex loss?
If I have a mini account of $ 2,500 for the Forex market (leverage of 4:1). After minilot purchase ($ 100) EUR / USD, which% loss EUR / USD has to be before i lost my $ 100 investment? How many pips before lose the $ 100? Suppose EURUSD is 1,400, when I can buy the minilot.
You make me think here. Is this a test? Important data is that 4:1 and have influence trade you $ 100. What I do not understand is why you have 4:01 gearing? It is more common to provide benefits from 100:1 to 400:1. So if you had a leverage of 100:1, you lose $ 100 when the currency moves 100 pips against. And proportional to lose $ 100 with 400:1 leverage, when the currency moves 25 pips against you.
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