-97.34% is the change from 866 to 23
Calculation steps:
[( 23 - 866 ) ÷ 866] x 100 = -97.34%
Formula
Percentage change = [(23 - 866) / 866] x 100
Subtract the new number by the original number
23 - 866 = -843
-843 ÷ 866 = -0.9734411085450346
-0.9734411085450346 x 100 = -97.34%