-56.44% is the change from 939 to 409
Calculation steps:
[( 409 - 939 ) ÷ 939] x 100 = -56.44%
Formula
Percentage change = [(409 - 939) / 939] x 100
Subtract the new number by the original number
409 - 939 = -530
-530 ÷ 939 = -0.564430244941427
-0.564430244941427 x 100 = -56.44%