Your "Cited by" counts come from the Google Scholar index. You can change the articles in your profile, but citations to them are computed and updated automatically.

Clicking the 'cited by' link in Google Scholar will display a list of articles and documents that have cited your document. This makes it possible to uncover other documents that are related by topic or subject to the original document.

However, Google Scholar only includes articles that are indexed within its database, and this is a much smaller subset of scholarly articles than found in some other databases.

In my opinion, in order to have a correct recovery of Citations Index, should be appropriate to consider at least this three different databases: Web of Science, Scopus and Google Scholar.

Naturally, we must therefore consider that different results could be obtained depending on the source used.