I'm not talking about the number of reports being stuck but the percentage.
So maybe is it an error? I'm stuck at : You have reported 79 posts with 74% accuracy
I doubt it. As BadBear said percentages move quickly when you have few reports and barely noticable when you have >1000 reports. IIRC hilariousandco is at >1900 reports probably more now.
Lets assume 97.0000% of these are correct, thats 1843 correct and 57 not. In order to reach 97.5% (I assume thats when 98% will be shown) he would have to make 2223 total correct reports vs 57 bad. Thats 380 good reports without fail.
For 79 posts with ~74.6835% assumed accuracy (59 good, 20 bad) you only need 1 good report (60/(60+20) = 75%)