What is the percentage change of the number of Restricted Stock Awards shares outstanding from August 30, 2018, to August 29, 2019?
{"Outstanding as of August 30, 2018": {"Number of Shares": 15.0, "Weighted-Average Grant Date Fair Value Per Share": 25.18}, "Granted": {"Number of Shares": 9.0, "Weighted-Average Grant Date Fair Value Per Share": 41.11}, "Restrictions lapsed": {"Number of Shares": -6.0, "Weighted-Average Grant Date Fair Value Per Share": 24.22}, "Canceled": {"Number of Shares": -2.0, "Weighted-Average Grant Date Fair Value Per Share": 24.79}, "Outstanding as of August 29, 2019": {"Number of Shares": 16.0, "Weighted-Average Grant Date Fair Value Per Share": 34.72}}
restricted_stock_awards_2019 = df["Outstanding as of August 29, 2019"]["Number of Shares"]
restricted_stock_awards_2018 = df["Outstanding as of August 30, 2018"]["Number of Shares"]
answer = (restricted_stock_awards_2019 - restricted_stock_awards_2018) / restricted_stock_awards_2018 * 100.0