-65.81% is the change from 816 to 279
Calculation steps:
[( 279 - 816 ) ÷ 816] x 100 = -65.81%
Formula
Percentage change = [(279 - 816) / 816] x 100
Subtract the new number by the original number
279 - 816 = -537
-537 ÷ 816 = -0.6580882352941176
-0.6580882352941176 x 100 = -65.81%