-11.66% is the change from 815 to 720
Calculation steps:
[( 720 - 815 ) ÷ 815] x 100 = -11.66%
Formula
Percentage change = [(720 - 815) / 815] x 100
Subtract the new number by the original number
720 - 815 = -95
-95 ÷ 815 = -0.1165644171779141
-0.1165644171779141 x 100 = -11.66%