-85.3% is the change from 449 to 66
Calculation steps:
[( 66 - 449 ) ÷ 449] x 100 = -85.3%
Formula
Percentage change = [(66 - 449) / 449] x 100
Subtract the new number by the original number
66 - 449 = -383
-383 ÷ 449 = -0.8530066815144766
-0.8530066815144766 x 100 = -85.3%