-23.4% is the change from 829 to 635
Calculation steps:
[( 635 - 829 ) ÷ 829] x 100 = -23.4%
Formula
Percentage change = [(635 - 829) / 829] x 100
Subtract the new number by the original number
635 - 829 = -194
-194 ÷ 829 = -0.23401688781664656
-0.23401688781664656 x 100 = -23.4%