-27.23% is the change from 918 to 668
Calculation steps:
[( 668 - 918 ) ÷ 918] x 100 = -27.23%
Formula
Percentage change = [(668 - 918) / 918] x 100
Subtract the new number by the original number
668 - 918 = -250
-250 ÷ 918 = -0.27233115468409586
-0.27233115468409586 x 100 = -27.23%