-48.15% is the change from 866 to 449
Calculation steps:
[( 449 - 866 ) ÷ 866] x 100 = -48.15%
Formula
Percentage change = [(449 - 866) / 866] x 100
Subtract the new number by the original number
449 - 866 = -417
-417 ÷ 866 = -0.4815242494226328
-0.4815242494226328 x 100 = -48.15%