-74.79% is the change from 829 to 209
Calculation steps:
[( 209 - 829 ) ÷ 829] x 100 = -74.79%
Formula
Percentage change = [(209 - 829) / 829] x 100
Subtract the new number by the original number
209 - 829 = -620
-620 ÷ 829 = -0.7478890229191797
-0.7478890229191797 x 100 = -74.79%