-9.89% is the change from 839 to 756
Calculation steps:
[( 756 - 839 ) ÷ 839] x 100 = -9.89%
Formula
Percentage change = [(756 - 839) / 839] x 100
Subtract the new number by the original number
756 - 839 = -83
-83 ÷ 839 = -0.09892729439809297
-0.09892729439809297 x 100 = -9.89%