• Merck average operating margin for 2023 was 14.52%, a 53.83% increase from 2022.
• Merck average operating margin for 2022 was 31.45%, a 108.14% decline from 2021.
• Merck average operating margin for 2021 was 15.11%, a 18.68% increase 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.