This is based on the round 2 FastTrack bond table, Digby’s “yield” for their 10.0S2020 bond is calculated in this format:
= ($100 - 93.41) / 100
= 10.0 / 93.41
= (2480 - 2020) / 2020
= (2480 - 2020) / 2480
= 0.1855 or 15.55% is the yield
NOTE: It isn’t computed, it is reported.