Trimmean formula or alternative

I get the same results when testing with RANK so hopefully just changing the formula to read as follows in B1 and down will work for you:

EDIT: In addition I changed % in the formula in B1 and down so that it reads:

=RANK(E1,E$1:E$10,1)<90.00000000001%*COUNT(E$1:E$10)

Let me know if you have any questions.