• Merck average net profit margin for 2023 was 9.06%, a 65.69% increase from 2022.
• Merck average net profit margin for 2022 was 26.41%, a 43.22% decline from 2021.
• Merck average net profit margin for 2021 was 18.44%, a 27.23% increase from 2020.

Net profit margin can be defined as net Income as a portion of total sales revenue.