The phrase "a relatively low base" is correct and usable in written English.
It can be used when discussing a starting point or foundation that is lower in comparison to other bases or standards.
Example: "The company's profits are starting from a relatively low base, which makes growth projections more optimistic."
Alternatives: "a comparatively low starting point" or "a modest foundation".
Unemployment is rising, off a relatively low base, but remains below the level in many other developed countries.
Gross domestic product growth appeared especially high because it was in comparison with a relatively low base in 2009.
However, Trinity Mirror said digital income, which is building from a relatively low base, grew by 15.7% in the four-month period and by 18.6% in April alone.
According to the survey: The rise in Russia's defence budget last year accounted for about 20% of the total worldwide increase in military spending, though it followed years of neglect and was from a relatively low base.
Gravity, starting from a relatively low base, more than tripled, moving back up to 11th place with takings of £365,000; its total to date is a strong £31.05m.
Both Saban and Miles have a relatively low base salary, with the bulk of their pay coming from performing duties related to news media and public appearances, which some lawyers call personal services clauses.
Because of its proximity to the sea, and relatively low base elevation (just over 2,000 feet), Whistler is wet; fog can sometimes be a problem.
While this is the case for some subgroups in this analysis, it is not the case throughout given the relatively low base case mortality rates assumed, especially for the preterm infant groups.
Hence, risk should be balanced against the relatively low base rate of future sexually abusive behaviour among children with sexual behavioural problems.
It is possible that the relatively low base composition of the pNW33N plasmid used for reporter gene expression in P. aeruginosa precludes a sufficiently high level of GFP expression to detect a selective effect.
Britain's younger adult population is somewhat distinctive, however, in having a relatively low skills base and unequal skills base, according to the OECD's Survey of Adult Skills (OECD 2013; Green et al. 2015; Kuczera et al. 2016).
