-27.63% is the change from 923 to 668
Calculation steps:
[( 668 - 923 ) ÷ 923] x 100 = -27.63%
Formula
Percentage change = [(668 - 923) / 923] x 100
Subtract the new number by the original number
668 - 923 = -255
-255 ÷ 923 = -0.27627302275189597
-0.27627302275189597 x 100 = -27.63%