Butterfield Bank shares declined 2.3 percent, or 3 cents, on the Bermuda Stock Exchange yesterday, closing at $1.27 as 8,879 changed hands.Ascendant Group also declined, its shares closing down 49 cents, or 4 percent, to finish at $11.51 as 1,100 shares changed hands.Overall the BSX closed down 18.48, or 1.66 percent, to close at 1,091.94.