Suresh bought a plot for Rs. 40,00,000. The next year, the price went down to Rs. 30,00,000, due to a landslide. What was the percentage of the decrease in price?

Initial price of the plot = Rs. 40,00,000

New price of the plot = Rs. 30,00,000

∴ Decrease in price = Initial price - New price

= 40,00,000 − 30,00,000

= Rs. 10,00,000

Therefore, the percentage decrease in price

$=\left(\frac{\mathrm{Decrease} \mathrm{in} \mathrm{price}}{\mathrm{Initial} \mathrm{price}}\right)\times 100$

$=\left(\frac{10,00,000}{40,00,000}\right)\times 100$

$=25\%$