-66.85% is the change from 923 to 306
Calculation steps:
[( 306 - 923 ) ÷ 923] x 100 = -66.85%
Formula
Percentage change = [(306 - 923) / 923] x 100
Subtract the new number by the original number
306 - 923 = -617
-617 ÷ 923 = -0.6684723726977249
-0.6684723726977249 x 100 = -66.85%