One REALLY easy method of percent of change is old-new/old. So this is how you do it... 35.76-29.24/35.76=x x=18.2% I DID NOT make that up myself. My math teacher is a ''mathematician" so he taught his honors kids that. Wow I can't believe I remember that! I thought my brain would be mush by now, since I haven't even thought of the word school all summer. Lol hope that helps