• Holcim average gross margin for 2016 was 35.52%, a 8.78% decline from 2015.
• Holcim average gross margin for 2015 was 38.94%, a 11.3% decline from 2014.
• Holcim average gross margin for 2014 was 43.9%, a 3.73% decline from 2013.

Gross margin can be defined as a company's total sales revenue minus its cost of goods sold, divided by the total sales revenue, expressed as a percentage.