-48.75% is the change from 839 to 430
Calculation steps:
[( 430 - 839 ) ÷ 839] x 100 = -48.75%
Formula
Percentage change = [(430 - 839) / 839] x 100
Subtract the new number by the original number
430 - 839 = -409
-409 ÷ 839 = -0.48748510131108463
-0.48748510131108463 x 100 = -48.75%