-51.04% is the change from 866 to 424
Calculation steps:
[( 424 - 866 ) ÷ 866] x 100 = -51.04%
Formula
Percentage change = [(424 - 866) / 866] x 100
Subtract the new number by the original number
424 - 866 = -442
-442 ÷ 866 = -0.5103926096997691
-0.5103926096997691 x 100 = -51.04%