Net profit / sales * 100 (AUD in Million) |Particular |2017 |2018 |Gross profit |18241 |16909 | |Sales|25912 |25667 | |Gross profit ratio |70.40%|65.88%| From the above table it has been determined that gross profit margin have reduced by 4.52% from year 2017 to 2018. Net profit / sales * 100 (AUD in Million) |Particular |2017 |2018 |Gross profit |18241 |16