What was the percentage change in Total Directors’ remuneration in 2019 from 2018?
{"": {"Year-ended 31 March 2019": "$M", "Year-ended 31 March 2018": "$M"}, "Directors emoluments": {"Year-ended 31 March 2019": 2.3, "Year-ended 31 March 2018": 3.3}, "Gains on exercise of share options": {"Year-ended 31 March 2019": 3.6, "Year-ended 31 March 2018": 3.5}, "Gains on vesting of LTIP awards": {"Year-ended 31 March 2019": 14.5, "Year-ended 31 March 2018": 4.2}, "Total Directors remuneration": {"Year-ended 31 March 2019": 20.4, "Year-ended 31 March 2018": 11.0}}
total_directors_remuneration_2019 = df["Total Directors remuneration"]["Year-ended 31 March 2019"]
total_directors_remuneration_2018 = df["Total Directors remuneration"]["Year-ended 31 March 2018"]
answer = (total_directors_remuneration_2019 - total_directors_remuneration_2018) / total_directors_remuneration_2018 * 100.0