-30.02% is the change from 866 to 606
Calculation steps:
[( 606 - 866 ) ÷ 866] x 100 = -30.02%
Formula
Percentage change = [(606 - 866) / 866] x 100
Subtract the new number by the original number
606 - 866 = -260
-260 ÷ 866 = -0.3002309468822171
-0.3002309468822171 x 100 = -30.02%