Question 6673
You can do it this way:

First, find the amount of the raise by subtacting the old hourly rate from the new hourly rate.

$12.62 - $12.27 = $0.35 per hour.

Next, divide the amount of the raise by the old hourly rate and multiply the result by 100 to get the percent increase.

[($0.35)/($12.27)](100) = (0.285348...)(100) = 2.85% increase.