-89.63% is the change from 781 to 81
Calculation steps:
[( 81 - 781 ) ÷ 781] x 100 = -89.63%
Formula
Percentage change = [(81 - 781) / 781] x 100
Subtract the new number by the original number
81 - 781 = -700
-700 ÷ 781 = -0.8962868117797695
-0.8962868117797695 x 100 = -89.63%