-91.48% is the change from 951 to 81
Calculation steps:
[( 81 - 951 ) ÷ 951] x 100 = -91.48%
Formula
Percentage change = [(81 - 951) / 951] x 100
Subtract the new number by the original number
81 - 951 = -870
-870 ÷ 951 = -0.9148264984227129
-0.9148264984227129 x 100 = -91.48%