-49.23% is the change from 839 to 426
Calculation steps:
[( 426 - 839 ) ÷ 839] x 100 = -49.23%
Formula
Percentage change = [(426 - 839) / 839] x 100
Subtract the new number by the original number
426 - 839 = -413
-413 ÷ 839 = -0.4922526817640048
-0.4922526817640048 x 100 = -49.23%