-88.43% is the change from 700 to 81
Calculation steps:
[( 81 - 700 ) ÷ 700] x 100 = -88.43%
Formula
Percentage change = [(81 - 700) / 700] x 100
Subtract the new number by the original number
81 - 700 = -619
-619 ÷ 700 = -0.8842857142857142
-0.8842857142857142 x 100 = -88.43%