M6-17 (Algo) Determining the Cause of Increasing Gross Profit [LO 6-6] Chol Group sells padlocks. It reported an increase in net sales from $5.2 billion in 2017 to $5.5 billion in 2018, and an increase in gross profit from $1.7 billion in 2017 to $1.9 billion in 2018. 1. Calculate each year's gross profit percentage. (Round your answers to 1 decimal place.) 2. The change in gross profit represents: Complete this question by entering your answers in the tabs below. Required 1 Required 2 Calculate each year's gross profit percentage. (Round your answers to 1 decimal place.) Gross Profit Percentage 2018 2017 %