What was the percentage change in net total inventory between 2018 and 2019?
{"Raw materials": {"2019": 36987, "2018": 45333}, "Work in process": {"2019": 1085, "2018": 1638}, "Finished goods": {"2019": 60233, "2018": 52877}, "Total Inventory, net": {"2019": 98305, "2018": 99848}}
total_inventory_net_2019 = df["Total Inventory, net"]["2019"]
total_inventory_net_2018 = df["Total Inventory, net"]["2018"]
answer = ( total_inventory_net_2019 - total_inventory_net_2018 ) / total_inventory_net_2018 * 100.0