What is the increase / (decrease) in the Termination of long distance minutes from 2018 to 2019?
{"Years Ended December 31, -- ": {"2019": 2019, "2018": 2018}, "Years Ended December 31, -- Termination of long distance minutes": {"2019": 696.1, "2018": 793.6}, "Years Ended December 31, -- Total revenue from contracts with customers": {"2019": 696.1, "2018": 793.6}, "Years Ended December 31, -- Other revenue": {"2019": "\u2014", "2018": "\u2014"}, "Years Ended December 31, -- Total Telecommunications segment revenue": {"2019": 696.1, "2018": 793.6}}
term_2019 = df["Years Ended December 31, -- Termination of long distance minutes"]["2019"]
term_2018 = df["Years Ended December 31, -- Termination of long distance minutes"]["2018"]
answer = term_2019 - term_2018