-61.27% is the change from 816 to 316
Calculation steps:
[( 316 - 816 ) ÷ 816] x 100 = -61.27%
Formula
Percentage change = [(316 - 816) / 816] x 100
Subtract the new number by the original number
316 - 816 = -500
-500 ÷ 816 = -0.6127450980392157
-0.6127450980392157 x 100 = -61.27%