What does it mean when you pacemaker is working 98 percent of the time?

I am not a physician but I can speak from personal experience as I do have a 100% pace maker implanted. Basically it means that the heart would not beat properly or sometimes not even at all on its own accord so the device must shock the heart to beat every single second. Pace makers used to have a set rhythm they would beat in but now the pacemakers can speed up or slow down depending on your activities for instance say if the patient were to exert themselves in any way the pacemaker would speed up as well which is much more natural for the heart and I imagine would probably prolong the patients life by years.