-15.7% is the change from 866 to 730
Calculation steps:
[( 730 - 866 ) ÷ 866] x 100 = -15.7%
Formula
Percentage change = [(730 - 866) / 866] x 100
Subtract the new number by the original number
730 - 866 = -136
-136 ÷ 866 = -0.15704387990762125
-0.15704387990762125 x 100 = -15.7%