Percentage is related to Rate. Rate is related to Annual. Annual is related to Christmas. 
Portion is related to Small. Small is related to Nest. Nest is related to Mess. Mess is the opposite of Organize. 
Percentage <--RelatedTo--> Rate <--RelatedTo--> Annual <--RelatedTo--> Christmas 
Portion <--RelatedTo--> Small <--RelatedTo--> Nest <--RelatedTo--> Mess <--Antonym--> Organize 