• West Pharmaceutical Services average operating margin for 2023 was 23%, a 13.08% decline from 2022.
• West Pharmaceutical Services average operating margin for 2022 was 26.46%, a 8.89% decline from 2021.
• West Pharmaceutical Services average operating margin for 2021 was 24.3%, a 36.9% 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.