What was the 2019 percentage change in number of shares distributed to employees?
{"": {"2019": "No. of Shares", "2018": "No. of Shares"}, "Number of shares at beginning of year": {"2019": 114758, "2018": 137227}, "Number of shares distributed to employees": {"2019": 45560, "2018": 42480}, "Number of shares transferred to main share registry and/or disposed of": {"2019": -44526, "2018": -64949}, "Number of shares at year end": {"2019": 115792, "2018": 114758}}
shares_2019 = df["Number of shares distributed to employees"]["2019"]
shares_2018 = df["Number of shares distributed to employees"]["2018"]
answer = (shares_2019 - shares_2018) / shares_2018 * 100.0