-48.16% is the change from 816 to 423
Calculation steps:
[( 423 - 816 ) ÷ 816] x 100 = -48.16%
Formula
Percentage change = [(423 - 816) / 816] x 100
Subtract the new number by the original number
423 - 816 = -393
-393 ÷ 816 = -0.48161764705882354
-0.48161764705882354 x 100 = -48.16%