Chang became the world's top female recurve archer in June 2017. At the annual Archery World Cup final in September she won two medals, achieving gold in the mixed team event alongside reigning men's world champion Kim Woojin and bronze in the women's individual event. In October Chang partnered Choi Mi-sun and Kang Chae-young at the 2017 World Championships to defeat the host nation Mexico and secure South Korea's thirteenth World Championship gold medal in the women's team event. She later finished as the runner-up in the women's individual event after losing to the Russian world number three Ksenia Perova in the final.