-50.42% is the change from 829 to 411
Calculation steps:
[( 411 - 829 ) ÷ 829] x 100 = -50.42%
Formula
Percentage change = [(411 - 829) / 829] x 100
Subtract the new number by the original number
411 - 829 = -418
-418 ÷ 829 = -0.5042219541616405
-0.5042219541616405 x 100 = -50.42%