The American soldiers in the Persian Gulf war were 697,000 troops, New World Encyclopedia.org. indicated 147 deaths related to the Gulf War.
Question: Percentage of Killed American Soldier's during the Gulf War
Given: 697,000 US Deployed US Soldiers during the war
147 killed during the war
Solution: Killed soldiers___________ x 100%
Total Number of US Soldiers
Percentage = 147___x 100%
697000
Answer =0.002%
However, there are some arguments that tell that most of it came from a friendly fire.