-83.74% is the change from 449 to 73
Calculation steps:
[( 73 - 449 ) ÷ 449] x 100 = -83.74%
Formula
Percentage change = [(73 - 449) / 449] x 100
Subtract the new number by the original number
73 - 449 = -376
-376 ÷ 449 = -0.8374164810690423
-0.8374164810690423 x 100 = -83.74%