-50.89% is the change from 839 to 412
Calculation steps:
[( 412 - 839 ) ÷ 839] x 100 = -50.89%
Formula
Percentage change = [(412 - 839) / 839] x 100
Subtract the new number by the original number
412 - 839 = -427
-427 ÷ 839 = -0.5089392133492253
-0.5089392133492253 x 100 = -50.89%