-10.73% is the change from 839 to 749
Calculation steps:
[( 749 - 839 ) ÷ 839] x 100 = -10.73%
Formula
Percentage change = [(749 - 839) / 839] x 100
Subtract the new number by the original number
749 - 839 = -90
-90 ÷ 839 = -0.10727056019070322
-0.10727056019070322 x 100 = -10.73%