-49.77% is the change from 866 to 435
Calculation steps:
[( 435 - 866 ) ÷ 866] x 100 = -49.77%
Formula
Percentage change = [(435 - 866) / 866] x 100
Subtract the new number by the original number
435 - 866 = -431
-431 ÷ 866 = -0.4976905311778291
-0.4976905311778291 x 100 = -49.77%