-94.04% is the change from 839 to 50
Calculation steps:
[( 50 - 839 ) ÷ 839] x 100 = -94.04%
Formula
Percentage change = [(50 - 839) / 839] x 100
Subtract the new number by the original number
50 - 839 = -789
-789 ÷ 839 = -0.9404052443384983
-0.9404052443384983 x 100 = -94.04%