-68.11% is the change from 254 to 81
Calculation steps:
[( 81 - 254 ) ÷ 254] x 100 = -68.11%
Formula
Percentage change = [(81 - 254) / 254] x 100
Subtract the new number by the original number
81 - 254 = -173
-173 ÷ 254 = -0.6811023622047244
-0.6811023622047244 x 100 = -68.11%