-49.2% is the change from 809 to 411
Calculation steps:
[( 411 - 809 ) ÷ 809] x 100 = -49.2%
Formula
Percentage change = [(411 - 809) / 809] x 100
Subtract the new number by the original number
411 - 809 = -398
-398 ÷ 809 = -0.4919653893695921
-0.4919653893695921 x 100 = -49.2%