-52.08% is the change from 816 to 391
Calculation steps:
[( 391 - 816 ) ÷ 816] x 100 = -52.08%
Formula
Percentage change = [(391 - 816) / 816] x 100
Subtract the new number by the original number
391 - 816 = -425
-425 ÷ 816 = -0.5208333333333334
-0.5208333333333334 x 100 = -52.08%