noun
component ratio; proportion; distribution ratio
Technical term used in statistics, economics, and business to describe the share or percentage each component contributes to a whole.
このグラフは、各製品の売上構成比を示しています。
This graph shows the sales component ratio of each product.
年齢別の人口構成比を計算する。
Calculate the population distribution ratio by age.
比率 is a general term for ratio, often between two quantities. 構成比 emphasizes the breakdown of a whole into its components.
Compound of 構成 (composition) and 比 (ratio). The exact historical derivation is uncertain, but the term is a modern technical coinage.