-1.77% is the change from 849 to 834
Calculation steps:
[( 834 - 849 ) ÷ 849] x 100 = -1.77%
Formula
Percentage change = [(834 - 849) / 849] x 100
Subtract the new number by the original number
834 - 849 = -15
-15 ÷ 849 = -0.0176678445229682
-0.0176678445229682 x 100 = -1.77%