-72.06% is the change from 816 to 228
Calculation steps:
[( 228 - 816 ) ÷ 816] x 100 = -72.06%
Formula
Percentage change = [(228 - 816) / 816] x 100
Subtract the new number by the original number
228 - 816 = -588
-588 ÷ 816 = -0.7205882352941176
-0.7205882352941176 x 100 = -72.06%