Something or someone that causes a reduction or decline

A person or thing that diminishes or makes less

घटाने वाला

English Usage: As a decreaser of the workload, the new software improved overall productivity.

Hindi Usage: काम के बोझ को घटाने वाले नए सॉफ़्टवेयर ने समग्र उत्पादकता में सुधार किया।