Thats the number which you are sticking to or may be thats the ratio you have decided by yourself and I guess you need to come out of it first and then you can decided another strategy so that you will have good profits back to you. You simply start a trade first and depending upon the coin which you are trading you should put up 5-10% loss as lowest limits of bottom and also keep upto 5% of profits to take up so that you can quickly gain and close the trade. The loss is set to bigger limit because truly speaking you need to give your trade a time and it may happen that before it goes that far down it may just come up very fast and profit you more. So you have to keep changing your % stop loss likewise to have higher success rate.