-90.86% is the change from 886 to 81
Calculation steps:
[( 81 - 886 ) ÷ 886] x 100 = -90.86%
Formula
Percentage change = [(81 - 886) / 886] x 100
Subtract the new number by the original number
81 - 886 = -805
-805 ÷ 886 = -0.9085778781038375
-0.9085778781038375 x 100 = -90.86%