What was the change in Foreign income (loss) between 2018 and 2019?
{"Domestic (1)": {"2019": -415707, "2018": -426897, "2017": -373690}, "Foreign (1)": {"2019": 866411, "2018": 800298, "2017": 629923}, "": {"2019": 450704, "2018": 373401, "2017": 256233}}
foreign_income_2019 = df["Foreign (1)"]["2019"]
foreign_income_2018 = df["Foreign (1)"]["2018"]
answer = foreign_income_2019 - foreign_income_2018