-2.05% is the change from 829 to 812
Calculation steps:
[( 812 - 829 ) ÷ 829] x 100 = -2.05%
Formula
Percentage change = [(812 - 829) / 829] x 100
Subtract the new number by the original number
812 - 829 = -17
-17 ÷ 829 = -0.020506634499396863
-0.020506634499396863 x 100 = -2.05%