-75.38% is the change from 329 to 81
Calculation steps:
[( 81 - 329 ) ÷ 329] x 100 = -75.38%
Formula
Percentage change = [(81 - 329) / 329] x 100
Subtract the new number by the original number
81 - 329 = -248
-248 ÷ 329 = -0.7537993920972644
-0.7537993920972644 x 100 = -75.38%