-52.4% is the change from 939 to 447
Calculation steps:
[( 447 - 939 ) ÷ 939] x 100 = -52.4%
Formula
Percentage change = [(447 - 939) / 939] x 100
Subtract the new number by the original number
447 - 939 = -492
-492 ÷ 939 = -0.5239616613418531
-0.5239616613418531 x 100 = -52.4%