-91.74% is the change from 981 to 81
Calculation steps:
[( 81 - 981 ) ÷ 981] x 100 = -91.74%
Formula
Percentage change = [(81 - 981) / 981] x 100
Subtract the new number by the original number
81 - 981 = -900
-900 ÷ 981 = -0.9174311926605505
-0.9174311926605505 x 100 = -91.74%