-34.56% is the change from 839 to 549
Calculation steps:
[( 549 - 839 ) ÷ 839] x 100 = -34.56%
Formula
Percentage change = [(549 - 839) / 839] x 100
Subtract the new number by the original number
549 - 839 = -290
-290 ÷ 839 = -0.3456495828367104
-0.3456495828367104 x 100 = -34.56%