The Journal Impact Factor Percentile transforms the rank in category by Journal Impact Factor into a percentile value, allowing more meaningful cross-category comparison. It is calculated by using the following formula:
Where:
CiteScore Percentile indicates the relative standing of a serial title in its subject field.
A serial that has a CiteScore Percentile of 96% is ranked according to CiteScore as high or higher than 96% of titles in that category. A title will receive a CiteScore Percentile for each subject area in which it’s indexed in Scopus.
A percentage or total number figure of a researcher's publications which are published in top journal percentiles (top 1% and 10%). The top journal percentiles can be based on 3 different journal metrics provided by Elsevier - CiteScore, SNIP or SJR.
In the following screen shot , we see the ranking of the 2018 CiteScore for the Forestry subject area in Scopus. (Scopus Sources, Elsevier, 2019). As with JIF, evaluations between journals should always be made within categories as citation and publication behaviour across disciplines can vary hugely. The CiteScore Percentile is helpful with interpretation as it indicates the relative standing of a serial title in its subject field. The Percentile and Ranking are relative to a specific subject area.
The Scopus Sources page allows you to browse a list of all journals, book series, trade publications, and conference proceedings available on Scopus with their journal rankings where applicable.