year-on-year; compared to the previous year
Used in economic, financial, and statistical reports to compare data with the same period of the previous year. Often appears in phrases like 前年比で or 前年比増減.
Sales increased by 5% compared to the previous year.
Looking at it on a year-on-year basis, exports are declining.
More precise term meaning 'compared to the same period of the previous year', often used in quarterly reports.
year-on-year change; relative change from previous year
Compound of 前年 (previous year) and 比 (comparison, ratio).