-51.96% is the change from 816 to 392
Calculation steps:
[( 392 - 816 ) ÷ 816] x 100 = -51.96%
Formula
Percentage change = [(392 - 816) / 816] x 100
Subtract the new number by the original number
392 - 816 = -424
-424 ÷ 816 = -0.5196078431372549
-0.5196078431372549 x 100 = -51.96%