-51.12% is the change from 939 to 459
Calculation steps:
[( 459 - 939 ) ÷ 939] x 100 = -51.12%
Formula
Percentage change = [(459 - 939) / 939] x 100
Subtract the new number by the original number
459 - 939 = -480
-480 ÷ 939 = -0.5111821086261981
-0.5111821086261981 x 100 = -51.12%