A downward adjustment or revision of a previously announced estimate, forecast, or target (often used for corporate performance, economic forecasts, or statistics).
会社は今期の売上予想を下方修正した。
The company revised this quarter's sales forecast downward.
業績の下方修正を受けて株価が急落した。
Shares plunged after the downward revision of earnings.
政府は経済成長率の見通しを下方修正し、追加対策を検討している。
The government lowered its growth forecast and is considering additional measures.