Fibonacci retracement levels connect any two points that the trader views as relevant, typically a high point and a low point. The percentage levels provided are areas where the price could stall or reverse. The most commonly used ratios include 23.6%, 38.2%, 50%, 61.8%, and 78.6%. These levels should not be relied on exclusively, so it is dangerous to assume the price will reverse after hitting a specific Fibonacci level.