Exhibit 99.24 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-M KEY PERFORMANCE FACTORS September 30, 2000 Expected B Maturity 10/15/02 Blended Coupon 6.8765% Excess Protection Level 3 Month Average 5.76% September, 2000 5.76% August, 2000 5.53% July, 2000 5.97% Cash Yield 19.32% Investor Charge Offs 4.49% Base Rate 9.07% Over 30 Day Delinquency 4.99% Seller's Interest 8.50% Total Payment Rate 13.85% Total Principal Balance $54,293,652,263.17 Investor Participation Amount $750,000,000.00 Seller Participation Amount $4,612,451,744.68