-9.82% is the change from 866 to 781
Calculation steps:
[( 781 - 866 ) ÷ 866] x 100 = -9.82%
Formula
Percentage change = [(781 - 866) / 866] x 100
Subtract the new number by the original number
781 - 866 = -85
-85 ÷ 866 = -0.09815242494226328
-0.09815242494226328 x 100 = -9.82%