-52.77% is the change from 866 to 409
Calculation steps:
[( 409 - 866 ) ÷ 866] x 100 = -52.77%
Formula
Percentage change = [(409 - 866) / 866] x 100
Subtract the new number by the original number
409 - 866 = -457
-457 ÷ 866 = -0.5277136258660509
-0.5277136258660509 x 100 = -52.77%