-91.08% is the change from 908 to 81
Calculation steps:
[( 81 - 908 ) ÷ 908] x 100 = -91.08%
Formula
Percentage change = [(81 - 908) / 908] x 100
Subtract the new number by the original number
81 - 908 = -827
-827 ÷ 908 = -0.9107929515418502
-0.9107929515418502 x 100 = -91.08%