• Merck average net profit margin for 2023 was 13.52%, a 13.11% increase from 2022.
• Merck average net profit margin for 2022 was 15.56%, a 6.14% decline from 2021.
• Merck average net profit margin for 2021 was 14.66%, a 37.27% increase from 2020.

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