Brihajjataka 7.4

7.4

sārdha udita udita nava aṃśa hatāt samastād bhāgo aṣṭa yukta śata saṃkhyam upaito nāśam/
krūre vilagna sahite vidhinā tv anena saumya īkṣite dalam ataḥ pralayaṃ prayāti//(vasantatilakā)

From the whole, multiplied by the number of navāṃśas that have risen with half, the part obtained by dividing by one hundred and eight is lost
when a malefic is situated in the ascendant by this rule; but when aspected by a benefic, half of that goes to destruction.