To find the final price of the jacket in February, we need to calculate the total discount applied to the original price.

In January, the jacket was on sale for 30% off, so the price was reduced to 70% of the original price.
In February, another discount of 40% was applied to the price in January, so the final price in February is 60% of the price in January.

Therefore, the price of the jacket in February is 60% of 70% of the original price, which is 0.6 * 0.7 = 0.42 or 42% of the original price.

So, the price of the jacket in February was 42% of the original price.