proc sql;
		select * from  attribute_change_history ch
		where field_name = 'status' and value = 'New' and id = '1758'  
		and datetime = (select max(datetime) from attribute_change_history where field_name = 'status' and value = 'New' and id = '1758');
	quit;

	proc sql;
			select * from attribute_change_history
			where field_name = 'status' and value = 'New' and id in ('1758','1759',....) 
			group by id
			having max(datetime);
		quit;