The following data presents the cases of Japanese Encephalitis in five states of India.

Number of females affected by Japanese encephalitis in West Bengal are what percentage (up to 1 decimal) more or less than that of females affected in Odisha?

The correct answer is 28.6 % less.

Step 1: Extract the relevant data from the given chart and table.
From the bar chart showing the total number of persons affected (in thousands):
• Total affected in Odisha = 57 thousand
• Total affected in West Bengal = 45 thousand

From the table showing the ratio of Male : Female:
• Odisha ratio (Male : Female) = 12 : 7 (Total parts = 12 + 7 = 19)
• West Bengal ratio (Male : Female) = 6 : 3 (Total parts = 6 + 3 = 9)

Step 2: Calculate the number of females affected in Odisha.

$\text{Females in Odisha}=57\times \frac{7}{19}=3\times 7=21\text{thousand}$

Step 3: Calculate the number of females affected in West Bengal.

$\text{Females in West Bengal}=45\times \frac{3}{9}=5\times 3=15\text{thousand}$

Step 4: Calculate the percentage difference.
We need to find what percentage the number of females affected in West Bengal is less than that of females affected in Odisha:

$\text{Difference}=21-15=6\text{thousand}$

$\text{Percentage Less}=\left(\frac{21-15}{21}\right)\times 100=\left(\frac{6}{21}\right)\times 100=\left(\frac{2}{7}\right)\times 100\approx 28.57\%$

Rounding up to 1 decimal place gives 28.6 % less.