What is the percentage change of RSUs outstanding from September 30, 2018 to September 29, 2019?
{"RSUs outstanding at September 30, 2018": {"Shares": 288098.0, "Value": 64.57}, "Granted": {"Shares": 93686.0, "Value": 86.08}, "Released": {"Shares": -55642.0, "Value": 84.23}, "Forfeited": {"Shares": -14297.0, "Value": 94.0}, "RSUs outstanding at September 29, 2019": {"Shares": 311845.0, "Value": 66.18}}
rsus_2019 = df["RSUs outstanding at September 29, 2019"]["Shares"]
rsus_2018 = df["RSUs outstanding at September 30, 2018"]["Shares"]
answer = (rsus_2019 - rsus_2018) / rsus_2018 * 100.0