Julian's measurement was 105 percent of 50 pounds and Amanda's measurement was 95 percent of 50 pounds. How many pounds off was Julian's measurement? How many pounds off was Amanda's measurement? Did they both have the same percent error?
If the true value was 50, then
Julian got 52.5
Amanda got 47.5
Clearly the actual and percent errors were the same in both cases.
Julian's error was +5%, Amanda's was -5%