-36.76% is the change from 816 to 516
Calculation steps:
[( 516 - 816 ) ÷ 816] x 100 = -36.76%
Formula
Percentage change = [(516 - 816) / 816] x 100
Subtract the new number by the original number
516 - 816 = -300
-300 ÷ 816 = -0.36764705882352944
-0.36764705882352944 x 100 = -36.76%