-7.79% is the change from 899 to 829
Calculation steps:
[( 829 - 899 ) ÷ 899] x 100 = -7.79%
Formula
Percentage change = [(829 - 899) / 899] x 100
Subtract the new number by the original number
829 - 899 = -70
-70 ÷ 899 = -0.0778642936596218
-0.0778642936596218 x 100 = -7.79%