-31.25% is the change from 816 to 561
Calculation steps:
[( 561 - 816 ) ÷ 816] x 100 = -31.25%
Formula
Percentage change = [(561 - 816) / 816] x 100
Subtract the new number by the original number
561 - 816 = -255
-255 ÷ 816 = -0.3125
-0.3125 x 100 = -31.25%