What is the difference in the weighted-average grant date fair value between granted RSUs and released RSUs?
{"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}}
granted_value = df["Granted"]["Value"]
released_value = df["Released"]["Value"]
answer = granted_value - released_value