Update app.py

app.py

@@ -526,8 +526,9 @@ def get_farmer_report(farmer_name, end_date=None, interest_rate=None):
                 'Description': row['Type'],
                 'Bank Account': row['Bank Account'],
                 'Amount': amount,
-                'Balance': balance
+                'Balance': -principal_due if principal_due > 0 else surplus_to_farmer
             })
+
             
             last_date = current_date