gross profit % = (gross profit/sales) x100
***You multiply by 100 to get the number into % format
2017
gross profit % = (5.9/9.3) x100
=64.13%
****You don't have to add all the zeros to show the actual billion amounts. The zeros cancel each other out in the division portion of the calculation.
2018
gross profit % = (5.7/8.9) x100
=64.04%