What was the change in total transaction with other related parties from 2018 to 2019?
{"The Cool Pool (i)": {"2019": 39666, "2018": 151152, "2017": 59838}, "Magni Partners (ii)": {"2019": -858, "2018": -375, "2017": -260}, "Borr Drilling (iii)": {"2019": 542, "2018": "\u2014", "2017": "\u2014"}, "2020 Bulkers (iv)": {"2019": 265, "2018": "\u2014", "2017": "\u2014"}, "Total": {"2019": 39615, "2018": 150777, "2017": 59578}}
total_2019 = df["Total"]["2019"]
total_2018 = df["Total"]["2018"]
answer = total_2019 - total_2018