Have a look to this discussion https://forum.easydatatransform.com/t/pdf-to-xfdf-to-edt-comments-annotations/1458/4
I think it is more or less the same solution you need, maybe you need to concat the ID and SubID columnd before using Total. Afterwards multiply the total result with 100 with calculate tranformation, or you add in the new created column used for Total 100 instead of 1.