-55.66% is the change from 866 to 384
Calculation steps:
[( 384 - 866 ) ÷ 866] x 100 = -55.66%
Formula
Percentage change = [(384 - 866) / 866] x 100
Subtract the new number by the original number
384 - 866 = -482
-482 ÷ 866 = -0.5565819861431871
-0.5565819861431871 x 100 = -55.66%