the merger did not affect the actual number of shares you bought. All that happened was, because of the 10:1 reverse split, your share amount is reduced by a factor of 10 while your dollar amount (the amount you paid for the shares) increases by a factor of 10. Your initial outlay remains the same. No loss and no gain.
Whatever shares you currently hold at this moment are valued at whatever the closing price was at close of business yesterday.
If you have 600 shares then you have 600x $9.66 = $5,976
At what price you need to break? well that will depend on exactly what you paid for the stock.
If you have an online broker then it is easy to see exactly how you stand by going to ´´positions´´ on your trading platform.
The information you give is a little confusing. Try again. I´m sure someone on this board will help you out.