-41.12% is the change from 839 to 494
Calculation steps:
[( 494 - 839 ) ÷ 839] x 100 = -41.12%
Formula
Percentage change = [(494 - 839) / 839] x 100
Subtract the new number by the original number
494 - 839 = -345
-345 ÷ 839 = -0.41120381406436235
-0.41120381406436235 x 100 = -41.12%