-50.66% is the change from 839 to 414
Calculation steps:
[( 414 - 839 ) ÷ 839] x 100 = -50.66%
Formula
Percentage change = [(414 - 839) / 839] x 100
Subtract the new number by the original number
414 - 839 = -425
-425 ÷ 839 = -0.5065554231227652
-0.5065554231227652 x 100 = -50.66%