Percentage decrease calculation from 2009 to 2018

Steps:

• Identify deaths in 2009 and 2018 from the table.
• Calculate decrease: 2009 value minus 2018 value.
• Compute percentage: (decrease / 2009 value) × 100 = 9%.
• Verify against other options using full table data.

Why B is correct:

• Percentage decrease formula confirms exact 9% drop from 2009 to 2018 values in the table.

Why the others are wrong:

• A: Table shows increases in some years (e.g., 2010–2011).
• C: Largest one-year drop is between 2016–2017, not 2017–2018.
• D: Actual decrease from 2009 to 2019 is 10%, not 7%.

Final answer: B