What is the percentage change in the total reserves from 2018 to 2019?
{"Reserves -- Share-based payment reserve": {"2019 $000": 3960, "2018 $000": 3198}, "Reserves -- Business combination reserve": {"2019 $000": 5571, "2018 $000": 5571}, "Reserves -- Foreign currency translation reserve": {"2019 $000": -12, "2018 $000": -24}, "Reserves -- ": {"2019 $000": 9519, "2018 $000": 8745}}
total_reserves_2019 = df["Reserves -- "]["2019 $000"]
total_reserves_2018 = df["Reserves -- "]["2018 $000"]
answer = (total_reserves_2019 - total_reserves_2018) / total_reserves_2018 * 100.0