Earlier research from Socialbakers indicates that post types not only see varying engagement rates, but also different levels of organic reach. For that analysis, Socialbakers examined 47,783 from 274 Facebook pages from August through October, finding a general decline in average reach during each month, from 19% in August to 16% in September and 12% in October. (Studies from Group M Next and the Ehrenberg-Bass Institute, as reported by Ad Age, also have found a general decline in post reach, although those studies also found engagement to be rising.)
The decline in reach found by Socialbakers was more pronounced for some post types than others. Links, which boasted the highest level of organic reach in August, at 22%, saw that figure drop to 19% in September and 15% in October. That equates to a 35% drop during that time period. Read the rest at MarketingCharts.