-49.09% is the change from 823 to 419
Calculation steps:
[( 419 - 823 ) ÷ 823] x 100 = -49.09%
Formula
Percentage change = [(419 - 823) / 823] x 100
Subtract the new number by the original number
419 - 823 = -404
-404 ÷ 823 = -0.4908869987849332
-0.4908869987849332 x 100 = -49.09%