How many signatures are required to start the formal decision making stage of a direct democracy mechanism?

Political Constitution of 1982 (Constitución Política de 1982)with amendments in 2012

https://www.constituteproject.org/constitution/Honduras_2012.pdf

[The following] haveinitiative to solicit the referendum or the plebiscite:

1. At least two percent (2%)of the citizens inscribed in the National Electoral Census, in accordance

with the datum that must beperiodically provided by the Supreme Electoral Tribunal to the

National Congress;