-59.3% is the change from 199 to 81
Calculation steps:
[( 81 - 199 ) ÷ 199] x 100 = -59.3%
Formula
Percentage change = [(81 - 199) / 199] x 100
Subtract the new number by the original number
81 - 199 = -118
-118 ÷ 199 = -0.592964824120603
-0.592964824120603 x 100 = -59.3%