• Keppel average operating margin for 2019 was 12.22%, a 33.22% decline from 2018.
• Keppel average operating margin for 2018 was 18.3%, a 59.69% decline from 2017.
• Keppel average operating margin for 2017 was 11.46%, a 14.03% increase from 2016.

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.