+484 if an item has a start mass of 92.0 grams and an end mass of 86.6 grams what is the percentage of change in mass
also if an item has a starting mass of 89.3 grams and an end mass of 94.4 grams what is the percentage of change in mass
+129852 % change = [ ( New Mass - Old Mass ) / (Old Mass ) * 100 ] %
So...for the first one we have
[ ( 86.6 - 92.0 ) / 92.0 * 100 ] % = [ - 5.4 / 92 * 100 ] % ≈ [ -5.87] % (decrease )
Second one
[ (94.4 - 89.3 ) / 89.3 * 100 ] % = [ 5.1 / 89.3 * 100 ] % ≈ [5.71 ]% (increase)
