-41.38% is the change from 829 to 486
Calculation steps:
[( 486 - 829 ) ÷ 829] x 100 = -41.38%
Formula
Percentage change = [(486 - 829) / 829] x 100
Subtract the new number by the original number
486 - 829 = -343
-343 ÷ 829 = -0.413751507840772
-0.413751507840772 x 100 = -41.38%