Last year Jacob made $2,300 at his summer job. This year he only made $1,771.

What is the percent decrease?

To find the percent decrease, we need to calculate the difference between the two amounts and divide it by the original amount.

The difference is $2,300 - $1,771 = $529.

We divide $529 by the original amount of $2,300 and multiply by 100 to get the percent decrease:

($529 / $2,300) x 100 = 23%.

Therefore, Jacob had a 23% decrease in earnings from last year to this year.