-19.67% is the change from 839 to 674
Calculation steps:
[( 674 - 839 ) ÷ 839] x 100 = -19.67%
Formula
Percentage change = [(674 - 839) / 839] x 100
Subtract the new number by the original number
674 - 839 = -165
-165 ÷ 839 = -0.1966626936829559
-0.1966626936829559 x 100 = -19.67%