This Dividend King hasn't struggled this badly since the 1990s.Retail is a competitive and dynamic business, so Target (TGT -4.06%) deserves credit for its generations of steady success. That said, things haven't been rosy lately. The company's sales are in decline, and the stock has plummeted over 60% from its high, its sharpest decline since the 1990s. Things don't get this bad without some mistakes, no doubt. But is Target a dying company?I don't think so. Target hasn't been an awful investment for sever ...