Zumiez’s March sales were better than Street projections, with comps down 2.9% against a 2.1% year-ago comparison, better than our and consensus projection for a midsingle-digit decline. As a result, Zumiez’s quarter-to-date comp decline of 0.8% is at the better end of management’s guidance for a full-quarter comp decrease in the low-single-digit range. Category trends…