-89.44% is the change from 767 to 81
Calculation steps:
[( 81 - 767 ) ÷ 767] x 100 = -89.44%
Formula
Percentage change = [(81 - 767) / 767] x 100
Subtract the new number by the original number
81 - 767 = -686
-686 ÷ 767 = -0.894393741851369
-0.894393741851369 x 100 = -89.44%