-27.89% is the change from 839 to 605
Calculation steps:
[( 605 - 839 ) ÷ 839] x 100 = -27.89%
Formula
Percentage change = [(605 - 839) / 839] x 100
Subtract the new number by the original number
605 - 839 = -234
-234 ÷ 839 = -0.2789034564958284
-0.2789034564958284 x 100 = -27.89%