-18.34% is the change from 829 to 677
Calculation steps:
[( 677 - 829 ) ÷ 829] x 100 = -18.34%
Formula
Percentage change = [(677 - 829) / 829] x 100
Subtract the new number by the original number
677 - 829 = -152
-152 ÷ 829 = -0.18335343787696018
-0.18335343787696018 x 100 = -18.34%