They recently sent out a link where you can see what your new costs will be. My healthcare premiums went up 40%! Thankfully the plan deductibles, terms, and maximums changed only a little. I know from the news that industry rates went up, but I am willing to bet that CSC dropped its contribution significantly also. Unsurprisingly they only gave the net number, and were silent on the company contributions.
Look for the email entitled "Look ahead to your 2017 benefits." The link is in there.