-3.49% is the change from 859 to 829
Calculation steps:
[( 829 - 859 ) ÷ 859] x 100 = -3.49%
Formula
Percentage change = [(829 - 859) / 859] x 100
Subtract the new number by the original number
829 - 859 = -30
-30 ÷ 859 = -0.034924330616996506
-0.034924330616996506 x 100 = -3.49%