-47.39% is the change from 939 to 494
Calculation steps:
[( 494 - 939 ) ÷ 939] x 100 = -47.39%
Formula
Percentage change = [(494 - 939) / 939] x 100
Subtract the new number by the original number
494 - 939 = -445
-445 ÷ 939 = -0.4739084132055378
-0.4739084132055378 x 100 = -47.39%