-35.45% is the change from 866 to 559
Calculation steps:
[( 559 - 866 ) ÷ 866] x 100 = -35.45%
Formula
Percentage change = [(559 - 866) / 866] x 100
Subtract the new number by the original number
559 - 866 = -307
-307 ÷ 866 = -0.35450346420323325
-0.35450346420323325 x 100 = -35.45%