-30.71% is the change from 648 to 449
Calculation steps:
[( 449 - 648 ) ÷ 648] x 100 = -30.71%
Formula
Percentage change = [(449 - 648) / 648] x 100
Subtract the new number by the original number
449 - 648 = -199
-199 ÷ 648 = -0.30709876543209874
-0.30709876543209874 x 100 = -30.71%