extent of decrease; degree of reduction
Used in economic, financial, or statistical contexts to describe how much a value, price, or rate has fallen.
株価の下げ幅が予想より大きかった。
The extent of the stock price decline was larger than expected.
今
The degree of reduction in exports this month was smaller than last month.
Compound of 下げ (sage, 'lowering') + 幅 (haba, 'range, extent').