Let's assume that
Your total troops=X (all that show up in your side at the beginning of the battle)
Your defeated troops=Y (all that are eliminated and disappear during the battle)
Your total troops=X (all that show up in your side at the beginning of the battle)
Your defeated troops=Y (all that are eliminated and disappear during the battle)
And there are different battle damage ratios in different battle scenes that add up to 100%: Death Ratio, Injury Ratio, Exhaustion Ratio and Revived Ratio. In the battle report,
Killed=Y*Death Ratio
Injured=Y*Injury Ratio
Exhausted=Y*Exhaustion Ratio
Revived=Y*Revived RateHealthy=X-Y(troops that stay until the very end of the battle)