• McKesson average operating margin for 2023 was 1.46%, a 35.19% decline from 2022.
• McKesson average operating margin for 2022 was 1.08%, a 180.6% increase from 2021.
• McKesson average operating margin for 2021 was -1.34%, a 596.3% 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.