Study the diagram below, which shows a pyramid of biomass for a temperate marine kelp forest ecosystem.

Calculate the percentage loss in biomass between the primary consumer and secondary consumer levels.
Shade one circle only.
12.5%12.5\%12.5%
77.8%77.8\%77.8%
87.5%87.5\%87.5%
90.4%90.4\%90.4%