What is the percentage change in total income between 2018 and 2019?
{"Domestic": {"2017": 75659, "2018": 85263, "2019": 215573}, "Foreign": {"2017": 99290, "2018": 107050, "2019": 117670}, "Total": {"2017": 174949, "2018": 192313, "2019": 333243}}
total_income_2019 = df["Total"]["2019"]
total_income_2018 = df["Total"]["2018"]
answer = ( total_income_2019 - total_income_2018 ) / total_income_2018 * 100.0