Tokyo stocks tumbled Thursday, with the Nikkei index briefly sliding over 3 percent, on growing concerns over Japanese corporate earnings prospects as the yen climbed sharply following the Bank of Japan’s interest rate hike. The 225-issue Nikkei Stock Average ended down 975.49 points, or 2.49 percent, from Wednesday at 38,126.33. The broader Topix index finished 90.57 points, or 3.24 percent, lower at 2,703.69. Every industry category on the top-tier Prime Market lost ground, led by real estate, transportation equipment and insurance issues. The yen briefly hit a four-month high at the 148 lev…