Exhibit 99.22 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-C KEY PERFORMANCE FACTORS November 30, 1999 Expected B Maturity 3/15/04 Blended Coupon 5.5610% Excess Protection Level 3 Month Average 5.97% November, 1999 5.85% October, 1999 6.21% September, 1999 5.86% Cash Yield 18.33% Investor Charge Offs 4.89% Base Rate 7.59% Over 30 Day Delinquency 5.02% Seller's Interest 8.52% Total Payment Rate 14.09% Total Principal Balance $48,461,894,441.68 Investor Participation Amount $750,000,000.00 Seller Participation Amount $4,130,074,923.19