The leading measure of Japanese stock prices dropped more than 5 percent Tuesday. It was the biggest one-day loss in Japan’s Nikkei Stock Average in nearly three years. In Europe, leading measures of stock prices also were lower on Tuesday. Investors across the world have a number of concerns. They include slower growth in the world economy, concerns about the financial health of big European banks, and low oil prices, according to Dick Hofschire of Fidelity Investments. Hofschire said China may help determine future share prices. If China can recover from slower growth, he believes prices will move higher. Adding to concerns is North Korea. On Tuesday, the Japanese parliament passed a resolution that criticized North Korea’s decision to launch a rocket last Sunday. The resolution said the launch hurts international peace. The measure passed with no opposition. In the United States, a new study showed growing public concern about the economy.