• Amgen average net profit margin for 2023 was 28.07%, a 15.14% decline from 2022.
• Amgen average net profit margin for 2022 was 24.38%, a 2.48% increase from 2021.
• Amgen average net profit margin for 2021 was 23.79%, a 20.73% increase from 2020.

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