What was the change in Total segment Operating profit in 2019 from 2018?
{"": {"2019": "\u00a3m", "(Restated) 2018": "\u00a3m"}, "Total segment Revenue": {"2019": 355.1, "(Restated) 2018": 330.1}, "Total segment Operating profit": {"2019": 243.7, "(Restated) 2018": 221.3}, "Finance costs  net": {"2019": -10.2, "(Restated) 2018": -10.6}, "Profit on the sale of subsidiary": {"2019": 8.7, "(Restated) 2018": "\u2013"}, "Profit before tax": {"2019": 242.2, "(Restated) 2018": 210.7}}
total_segment_operating_profit_2019 = df["Total segment Operating profit"]["2019"]
total_segment_operating_profit_2018 = df["Total segment Operating profit"]["(Restated) 2018"]
answer = total_segment_operating_profit_2019 - total_segment_operating_profit_2018