-56.99% is the change from 816 to 351
Calculation steps:
[( 351 - 816 ) ÷ 816] x 100 = -56.99%
Formula
Percentage change = [(351 - 816) / 816] x 100
Subtract the new number by the original number
351 - 816 = -465
-465 ÷ 816 = -0.5698529411764706
-0.5698529411764706 x 100 = -56.99%