-27.84% is the change from 923 to 666
Calculation steps:
[( 666 - 923 ) ÷ 923] x 100 = -27.84%
Formula
Percentage change = [(666 - 923) / 923] x 100
Subtract the new number by the original number
666 - 923 = -257
-257 ÷ 923 = -0.27843986998916576
-0.27843986998916576 x 100 = -27.84%