-30.88% is the change from 816 to 564
Calculation steps:
[( 564 - 816 ) ÷ 816] x 100 = -30.88%
Formula
Percentage change = [(564 - 816) / 816] x 100
Subtract the new number by the original number
564 - 816 = -252
-252 ÷ 816 = -0.3088235294117647
-0.3088235294117647 x 100 = -30.88%