How to get position of inverted RecycleView?

I'm using a recycleview that takes data from a database (I'm using Sugar ORM) and I've reversed the order because I wanted the older ones for the older ones, but to delete I need the position in the database, I'm doing with swipe, and it picks up the adpater's position (which is not the same as the DB because it's inverted), how do I get the position like this?

  List<Notificacao> listnotificacoes = Notificacao.listAll(Notificacao.class);

        Log.d("igr","Lista de Notificaoes: " + listnotificacoes);

        LinearLayoutManager llm = new LinearLayoutManager(view.getContext());
        llm.setReverseLayout(true);
        llm.setStackFromEnd(true);
        mrecyclerView.setLayoutManager(llm);
        mAdapterNoti = new AdapterNotificacao(listnotificacoes);
        mrecyclerView.setAdapter(mAdapterNoti);

        ItemTouchHelper.SimpleCallback simpleItemTouchCallback = new ItemTouchHelper.SimpleCallback(0, ItemTouchHelper.LEFT) {
            @Override
            public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {
                return false;
            }

            @Override
            public void onSwiped(RecyclerView.ViewHolder viewHolder, int swipeDir) {
                final int position = viewHolder.getAdapterPosition();
                Log.d("igr","posicao"+position);
                int posicaodb = position+1;
                Log.d("igr","posicaodb"+posicaodb);
                try{
                    try{
                        Notificacao notificacao = Notificacao.findById(Notificacao.class,posicaodb);
                        Log.d("igr",""+notificacao.getMensagem());
                    }catch (Exception e){
                        Log.d("igr","erro ao obter mensagem da notificao" + e);
                    }
                    //notificacao.delete();
                    //Log.d("igr","deletou  a notificao no BD");
                    //mAdapterNoti.notifyItemRemoved(position);

                }catch (Exception e){
                    Log.d("igr","Erro ao deletar a notificacao no DB" + e);

                }

            }
        };  

Code proposed by Marcio:

@Override
public void onSwiped(RecyclerView.ViewHolder viewHolder, int swipeDir) {
    final int position = viewHolder.getAdapterPosition();
    Log.d("igr","posicao"+position);
    int positionToDelete = mAdapterNoti.getItemCount() - position - 1;
    //int posicaodb = position+1;
    Log.d("igr","positionToDelete"+positionToDelete);
    try{
        try{
            Notificacao notificacao = Notificacao.findById(Notificacao.class,positionToDelete);
            Log.d("igr",""+notificacao.getMensagem());
        }catch (Exception e){
            Log.d("igr","erro ao obter mensagem da notificao" + e);
        }
        //notificacao.delete();
        //Log.d("igr","deletou  a notificao no BD");
        //mAdapterNoti.notifyItemRemoved(position);

    }catch (Exception e){
        Log.d("igr","Erro ao deletar a notificacao no DB" + e);

    }

}

};