Update app.py

app.py

@@ -47,7 +47,7 @@ new_y = [A]
 
 for i in range(1, len(A_y)):
     r_temp = new_df["Rate"].values[i]
-    val =  A_y[i] * (1 + r_temp / (12*100))
+    val =  new_y[i-1] * (1 + r_temp / (12*100))
     new_y.append(val)
 
 new_df["Returns"] = new_y