-89.91% is the change from 803 to 81
Calculation steps:
[( 81 - 803 ) ÷ 803] x 100 = -89.91%
Formula
Percentage change = [(81 - 803) / 803] x 100
Subtract the new number by the original number
81 - 803 = -722
-722 ÷ 803 = -0.8991282689912827
-0.8991282689912827 x 100 = -89.91%