You can use a sell stop order to protect yourself against market price decreases. In these orders, the stop price is entered below the current market price. If entered above market price, it will execute immediately.
You can specify the sell stop price in two ways:
1. A static price. For example, if the current market price of BTC is $50,000, you can set it to $49,500 to trigger a market sell if the price drops to $49,500.
2. Price offset based on percentage of current market price. For example, if the current market price of BTC is $60,000, using a 10% negative offset from the current market price will trigger a market sell when the price drops to $54,000.
Example: Suppose you purchased 0.08 BTC/USD at $20,500 thinking that the market price will go up. However, you want to limit your possible losses on this purchase so you set the stop price at 20,000 USD. So, if the market price falls to $20,000 your BTC will be sold.