Home   >    English Grammar    >   How do you describe trends & graphs using prepositions?          Describing trends and graphs with prepositions   Discover how to describe trends in graphs using prepositions correctly!   Examples    There has been an increase  in  the number of people aged over thirty. [ ✓ ]     There has been an increase of  the number of people aged over thirty. [ ✗ ]            Between 1990 and 2000, there was a drop 15%. [ ✗ ]      Between 1990 and 2000, there was a drop of  15%. [ ✓ ]           We can express a specific trend or change using a noun  + in  + a noun phrase  describing what has changed:      a(n) plunge / dip / reduction / plummet / surge / hike / drop, etc. in something           Describing Trends in Graphs Examples          There has been a significant plunge in the stock market .    The data reveals a noteworthy dip in customer satisfaction .       When we talk about a chang...