-66.41% is the change from 923 to 310
Calculation steps:
[( 310 - 923 ) ÷ 923] x 100 = -66.41%
Formula
Percentage change = [(310 - 923) / 923] x 100
Subtract the new number by the original number
310 - 923 = -613
-613 ÷ 923 = -0.6641386782231853
-0.6641386782231853 x 100 = -66.41%