-63.21% is the change from 829 to 305
Calculation steps:
[( 305 - 829 ) ÷ 829] x 100 = -63.21%
Formula
Percentage change = [(305 - 829) / 829] x 100
Subtract the new number by the original number
305 - 829 = -524
-524 ÷ 829 = -0.632086851628468
-0.632086851628468 x 100 = -63.21%