noun
percentage of fault; comparative negligence
Used in traffic accidents and insurance contexts to assign a share of blame to each party. Often expressed as a ratio like 80:20.
事故の過失割合は、相手が8割、こちらが2割と判断された。
The percentage of fault for the accident was determined to be 80% for the other party and 20% for us.
保険会社と過失割合について話し合った。
I discussed the comparative negligence with the insurance company.