-3.39% is the change from 856 to 827
Calculation steps:
[( 827 - 856 ) ÷ 856] x 100 = -3.39%
Formula
Percentage change = [(827 - 856) / 856] x 100
Subtract the new number by the original number
827 - 856 = -29
-29 ÷ 856 = -0.03387850467289719
-0.03387850467289719 x 100 = -3.39%