What is the percentage change in the non-current provisions from 2018 to 2019?
{"Current -- Annual leave": {"2019 $000": 2349, "2018 $000": 2233}, "Current -- Long service leave": {"2019 $000": 830, "2018 $000": 781}, "Current -- Clawback": {"2019 $000": 2715, "2018 $000": 2463}, "Current -- Rebates": {"2019 $000": 241, "2018 $000": 224}, "Current -- ": {"2019 $000": 6135, "2018 $000": 5701}, "Non-Current -- Long service leave": {"2019 $000": 418, "2018 $000": 343}, "Non-Current -- ": {"2019 $000": 418, "2018 $000": 343}}
non_current_2019 = df["Non-Current -- Long service leave"]["2019 $000"]
non_current_2018 = df["Non-Current -- Long service leave"]["2018 $000"]
answer = (non_current_2019 - non_current_2018) / non_current_2018 * 100.0