-48% is the change from 823 to 428
Calculation steps:
[( 428 - 823 ) ÷ 823] x 100 = -48%
Formula
Percentage change = [(428 - 823) / 823] x 100
Subtract the new number by the original number
428 - 823 = -395
-395 ÷ 823 = -0.479951397326853
-0.479951397326853 x 100 = -48%