percentage vs usuage

percentage

noun
  • Benefit or advantage. 

  • The amount, number or rate of something, regarded as part of a total of 100; a part of a whole. 

  • A share of the sales, profits, gross margin or similar. 

usuage

noun
  • consumption or utilisation 

How often have the words percentage and usuage occurred in a corpus of books? (source: Google Ngram Viewer )