-47.63% is the change from 823 to 431
Calculation steps:
[( 431 - 823 ) ÷ 823] x 100 = -47.63%
Formula
Percentage change = [(431 - 823) / 823] x 100
Subtract the new number by the original number
431 - 823 = -392
-392 ÷ 823 = -0.47630619684082626
-0.47630619684082626 x 100 = -47.63%