-37.04% is the change from 648 to 408
Calculation steps:
[( 408 - 648 ) ÷ 648] x 100 = -37.04%
Formula
Percentage change = [(408 - 648) / 648] x 100
Subtract the new number by the original number
408 - 648 = -240
-240 ÷ 648 = -0.37037037037037035
-0.37037037037037035 x 100 = -37.04%