fix rolling perc drop

app.py

@@ -152,7 +152,7 @@ def get_rolling_stats(df, lev, otimeheader, days):
         rolling_df = df[df[otimeheader] >= rollend]
 
         if len(rolling_df) > 0:
-            rolling_perc = rolling_df['Return Per Trade'].drop('Drawdown %', axis=1).dropna().cumprod().values[-1]-1
+            rolling_perc = rolling_df['Return Per Trade'].dropna().cumprod().values[-1]-1
         else: 
             rolling_perc = np.nan
     else: