For example：
Balance of Margin account：HKD 300,000
Open Position ：USD/JPY 500,000 (USD short position)
Client places a order ：Client places an order to buy USD/CHF 100,000
Unrealized P/L ：Loss HKD 50,000
Realized P/L ：Loss HKD 100,000
Accrued Int ：HKD 5,000 (client pays)
Exchange Rate ：USD/HKD = 7.765
is it 6%?