-11.78% is the change from 866 to 764
Calculation steps:
[( 764 - 866 ) ÷ 866] x 100 = -11.78%
Formula
Percentage change = [(764 - 866) / 866] x 100
Subtract the new number by the original number
764 - 866 = -102
-102 ÷ 866 = -0.11778290993071594
-0.11778290993071594 x 100 = -11.78%