Accuracy vs Hit Chance

[Lomaster]

While i understand how the final hit chance can degrade when the firer panics or the target takes evasive maneuver, i don't understand why the initial accuracy of ATGMs is always estimated so low? I target a tank with Malyutka ATGM, it tells me that Accuracy is 9%, but the final hit chance can go as high as 95%. What gives? Perhaps i misinterpret the meaning of "Accuracy" value?
WinSPWW2 is much more predictable in that aspect.