public function getLastMonthSales()
{
$data['num'] = jual::where('tgl', '>=', Carbon::now()->subMonth()->format('Y-m-d'))->where('status', 1)->sum('totnetto');
$data['num'] = Helpers::currency($data['num'], 0, 'id');
$data['tgl1'] = Carbon::parse('First day of this month')->format('Y-m-d');
$data['tgl1'] = Carbon::now()->subMonth()->format('Y-m-d');
$data['tgl2'] = Carbon::now()->format('Y-m-d');
return $data;
}