TOTOWA, N.J. — Marshalls has opened a 50,000-square-foot store at Totowa Square, a 258,000-square-foot retail power center in Northern New Jersey. The discount retailer is backfilling a space formerly occupied by Toys ‘R’ Us. Brian Katz and Amy Staats of Katz & Associates represented the landlord in the lease negotiations. Jerry Welkis of Welco Realty represented the tenant. The center is now 97 percent leased.