-89.16% is the change from 747 to 81
Calculation steps:
[( 81 - 747 ) ÷ 747] x 100 = -89.16%
Formula
Percentage change = [(81 - 747) / 747] x 100
Subtract the new number by the original number
81 - 747 = -666
-666 ÷ 747 = -0.891566265060241
-0.891566265060241 x 100 = -89.16%