-3.81% is the change from 866 to 833
Calculation steps:
[( 833 - 866 ) ÷ 866] x 100 = -3.81%
Formula
Percentage change = [(833 - 866) / 866] x 100
Subtract the new number by the original number
833 - 866 = -33
-33 ÷ 866 = -0.03810623556581986
-0.03810623556581986 x 100 = -3.81%