Chang partnered Choi Mi-sun and Kang Chae-young at the 2019 World Championships, achieving a silver medal in the women's team event after the trio lost to perennial rivals Taiwan in the final. By July of that year Chang had been identified by the magazine "Bow International" as having noticeably dipped in form since the beginning of 2018, and in September she was eliminated from the national selection process for the 2020 Summer Olympics after finishing outside the top 20 qualifiers. She was however afforded a second opportunity to qualify after the COVID-19 pandemic forced the postponement of the Olympics until the following year. She was eliminated from contention for the second time in March 2021.