HONG KONG—Shares of China Evergrande Group are set to fall 10.5 percent on Thursday after a deal to sell a $2.6 billion stake in its property services unit fell through, in the latest blow to the developer whose massive debt woes have rattled global markets. Evergrande Property Services Group’s stock was set to drop 8 percent as trading in both companies’ shares resumed. In a statement late on Wednesday, Evergrande said it had scrapped a deal to sell a 50.1 percent stake in its property services arm to smaller rival Hopson Development Holdings.