-77.35% is the change from 839 to 190
Calculation steps:
[( 190 - 839 ) ÷ 839] x 100 = -77.35%
Formula
Percentage change = [(190 - 839) / 839] x 100
Subtract the new number by the original number
190 - 839 = -649
-649 ÷ 839 = -0.7735399284862932
-0.7735399284862932 x 100 = -77.35%