-10.8% is the change from 648 to 578
Calculation steps:
[( 578 - 648 ) ÷ 648] x 100 = -10.8%
Formula
Percentage change = [(578 - 648) / 648] x 100
Subtract the new number by the original number
578 - 648 = -70
-70 ÷ 648 = -0.10802469135802469
-0.10802469135802469 x 100 = -10.8%