-16.18% is the change from 816 to 684
Calculation steps:
[( 684 - 816 ) ÷ 816] x 100 = -16.18%
Formula
Percentage change = [(684 - 816) / 816] x 100
Subtract the new number by the original number
684 - 816 = -132
-132 ÷ 816 = -0.16176470588235295
-0.16176470588235295 x 100 = -16.18%