-30.1% is the change from 927 to 648
Calculation steps:
[( 648 - 927 ) ÷ 927] x 100 = -30.1%
Formula
Percentage change = [(648 - 927) / 927] x 100
Subtract the new number by the original number
648 - 927 = -279
-279 ÷ 927 = -0.30097087378640774
-0.30097087378640774 x 100 = -30.1%