P= percent change
The new number is lower than the original, so we need to use a % decrease formula.
P=[(original#-new#) ÷ original #] x 100
P= [(29.77-28.35)/29.77] x 100
P= (1.42/29.77) x 100
P= 0.047747 x 100
P= 4.77% decrease
Hope this helps! :)
The Answer Is In Fact "Liquefaction".
Hope I Helped :)