-40.77% is the change from 829 to 491
Calculation steps:
[( 491 - 829 ) ÷ 829] x 100 = -40.77%
Formula
Percentage change = [(491 - 829) / 829] x 100
Subtract the new number by the original number
491 - 829 = -338
-338 ÷ 829 = -0.4077201447527141
-0.4077201447527141 x 100 = -40.77%