The shoe store expected to sell at least 95 pairs of shoes one weekend, but they only sold 77 pairs. what was the approximate percent error? show your work to find the percent error.

The error of percentage is the amount of error over the original amount.

In this case it is 22/95  (not 22 over 77 because 77 is not the original amount they expected to sell.   

22/95 = .2315  or 23.2% to the nearest tenth of a percent
Perhaps your teacher just wants 23% as an the approximate error.

What are the following algebraic equations. you need to post those if you want the answer