-87.3% is the change from 811 to 103
Calculation steps:
[( 103 - 811 ) ÷ 811] x 100 = -87.3%
Formula
Percentage change = [(103 - 811) / 811] x 100
Subtract the new number by the original number
103 - 811 = -708
-708 ÷ 811 = -0.872996300863132
-0.872996300863132 x 100 = -87.3%