-48.99% is the change from 939 to 479
Calculation steps:
[( 479 - 939 ) ÷ 939] x 100 = -48.99%
Formula
Percentage change = [(479 - 939) / 939] x 100
Subtract the new number by the original number
479 - 939 = -460
-460 ÷ 939 = -0.4898828541001065
-0.4898828541001065 x 100 = -48.99%