-85.65% is the change from 439 to 63
Calculation steps:
[( 63 - 439 ) ÷ 439] x 100 = -85.65%
Formula
Percentage change = [(63 - 439) / 439] x 100
Subtract the new number by the original number
63 - 439 = -376
-376 ÷ 439 = -0.856492027334852
-0.856492027334852 x 100 = -85.65%