So to rename AspNetUsers to a different table name you need to go into the file that contains your Identity Model. In that file, you should have an ApplicationDbContext as well. In the OnModelCreating method, this is where you will map your changes to what is provided by default.
modelBuilder.Entity<IdentityUser>().ToTable("MyNewUserTable").Property(p => p.Id).HasColumnName("UserId");
modelBuilder.Entity<MyNewUserTable>().ToTable("MyNewUserTable").Property(p => p.Id).HasColumnName("UserId");
modelBuilder.Entity<IdentityUserRole>().ToTable("MyNewUserTableRoles");
modelBuilder.Entity<IdentityUserLogin>().ToTable("MyNewUserTableLogins");
modelBuilder.Entity<IdentityUserClaim>().ToTable("MyNewUserTableClaims");
modelBuilder.Entity<IdentityRole>().ToTable("MyNewUserTableRoles");
In my example I've renamed the AspNetUsers table to MyNewUserTable and I've also renamed all the default Identity framework tables as well.
For more information on this, here are some links
c# - How can I change the table names when using Visual Studio 2013 AspNet Identity? - Stack Overflow[
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rename aspnetusers table - Google Search[
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