-89.79% is the change from 793 to 81
Calculation steps:
[( 81 - 793 ) ÷ 793] x 100 = -89.79%
Formula
Percentage change = [(81 - 793) / 793] x 100
Subtract the new number by the original number
81 - 793 = -712
-712 ÷ 793 = -0.8978562421185372
-0.8978562421185372 x 100 = -89.79%