"To lower that number" means to decrease or reduce the numerical value being referred to.
Sentences with «to lower that number»
There has been a past general trend of low numbers of Indigenous people imprisoned for drug offences. (humanrights.gov.au)
Depending on time and budget constraints, I would suggest running multiple instructor - led training sessions with lower numbers in attendance. (elearningindustry.com)
Dogs with low numbers of heartworms with minimal damage present can live a normal life span after treatment. (uvma.org)