-40.65% is the change from 866 to 514
Calculation steps:
[( 514 - 866 ) ÷ 866] x 100 = -40.65%
Formula
Percentage change = [(514 - 866) / 866] x 100
Subtract the new number by the original number
514 - 866 = -352
-352 ÷ 866 = -0.4064665127020785
-0.4064665127020785 x 100 = -40.65%