-35.22% is the change from 866 to 561
Calculation steps:
[( 561 - 866 ) ÷ 866] x 100 = -35.22%
Formula
Percentage change = [(561 - 866) / 866] x 100
Subtract the new number by the original number
561 - 866 = -305
-305 ÷ 866 = -0.35219399538106233
-0.35219399538106233 x 100 = -35.22%