The spawning stock biomass (SSB) of Peruvian anchoveta (Engraulis ringens) in a specific fishing zone of the South Pacific is monitored carefully to ensure catches remain sustainable. Figure 1 shows the estimated spawning stock biomass between 1995 and 2025.
Calculate the percentage decrease in the spawning stock biomass of Peruvian anchoveta between 1995 and 2010.
Use the equation:
percentage decrease=(biomass in 1995−biomass in 2010)biomass in 1995×100\text{percentage decrease} = \frac{(\text{biomass in 1995} - \text{biomass in 2010})}{\text{biomass in 1995}} \times 100percentage decrease=biomass in 1995(biomass in 1995−biomass in 2010)×100
Give your answer to the nearest whole number.