-81.07% is the change from 449 to 85
Calculation steps:
[( 85 - 449 ) ÷ 449] x 100 = -81.07%
Formula
Percentage change = [(85 - 449) / 449] x 100
Subtract the new number by the original number
85 - 449 = -364
-364 ÷ 449 = -0.8106904231625836
-0.8106904231625836 x 100 = -81.07%