-89.51% is the change from 772 to 81
Calculation steps:
[( 81 - 772 ) ÷ 772] x 100 = -89.51%
Formula
Percentage change = [(81 - 772) / 772] x 100
Subtract the new number by the original number
81 - 772 = -691
-691 ÷ 772 = -0.8950777202072538
-0.8950777202072538 x 100 = -89.51%