The constant growth model can be used here even if the dividends are decreasing by a persistent percentage, just make sure to distinguish the negative development. So, the computation for the price of the stock today will be:
P= dividend (1 +reduce payout) / (Return–reduce payout)
P= $12.30(1 – 0.05) / [(0.09 – (–0.05)]
P= $11.69 / 0.14
P = $83.46 is the price you will pay for a share today.