The sportswear specialist's stock is down about 50% since the beginning of 2024.Investors who thought sports apparel and shoe company Nike (NKE 1.75%) was a good buy at the end of 2024, following a 30% decline, have unfortunately been dead wrong -- at least for now. Year to date, the stock has fallen another 28%. This puts the stock's total loss since the beginning of 2024 at a painful 50% as of this writing.With such an extraordinary decline in the rearview mirror, some investors may be wondering if now is ...