• Bank Of China average operating margin for 2023 was 46.77%, a 9.94% decline from 2022.
• Bank Of China average operating margin for 2022 was 51.93%, a 0.63% decline from 2021.
• Bank Of China average operating margin for 2021 was 52.26%, a 3.24% decline from 2020.

Operating margin can be defined as operating margin measurement of what proportion of a company's revenue is left over after paying for variable costs of production such as wages, raw materials, etc.