-89.41% is the change from 765 to 81
Calculation steps:
[( 81 - 765 ) ÷ 765] x 100 = -89.41%
Formula
Percentage change = [(81 - 765) / 765] x 100
Subtract the new number by the original number
81 - 765 = -684
-684 ÷ 765 = -0.8941176470588236
-0.8941176470588236 x 100 = -89.41%