Yunita Maha Rani and Jamaludin (2026) “The Effect of Non-Performing Loans (NPL), Operational Efficiency (BOPO), and CET1 Ratio on Financial Performance (Case Study of PT Bank Mandiri Tbk for the 2016-2025 Period)”, Escalate : Economics and Business Journal, 4(3), pp. 472–479. doi: 10.61536/escalate.v4i3.742.