Access tableview button index path in objective C

-(IBAction)btnMore_click:(id)sender{
    UIButton *btn =(UIButton *)sender;
    CGPoint rootViewPoint = [btn.superview convertPoint:btn.center toView:tblExcelData];
    NSIndexPath *indexPath = [tblExcelData indexPathForRowAtPoint:rootViewPoint];
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
      ExcelSheetCell *cell = (ExcelSheetCell*)[tableView dequeueReusableCellWithIdentifier:@"ExcelSheetCell"];
      if (cell == nil) {
            NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"ExcelSheetCell" owner:self options:nil];
            cell = [nib objectAtIndex:1];
      }
      [cell.btnMore addTarget:self action:@selector(btnMore_click:) forControlEvents:UIControlEventTouchUpInside];
}