-18.26% is the change from 816 to 667
Calculation steps:
[( 667 - 816 ) ÷ 816] x 100 = -18.26%
Formula
Percentage change = [(667 - 816) / 816] x 100
Subtract the new number by the original number
667 - 816 = -149
-149 ÷ 816 = -0.18259803921568626
-0.18259803921568626 x 100 = -18.26%