• Norsk Hydro average operating margin for 2023 was 8.71%, a 44.52% decline from 2022.
• Norsk Hydro average operating margin for 2022 was 15.7%, a 87.8% decline from 2021.
• Norsk Hydro average operating margin for 2021 was 8.36%, a 283.49% 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.