It appears that an error may have occurred in the Hermes watch battery software or hardware. This may result in an incorrect display of battery status on the watch, such as indicating a percentage of -100% instead of the actual 93%.
To solve this problem, try resetting the watch by completely draining the battery and then charging it to 100%. If the battery status is still not displayed correctly, the watch may need to be repaired or the battery replaced. In this case, it is best to contact the manufacturer or a licensed watchmaker to have the problem investigated and resolved.