-69.91% is the change from 329 to 99
Calculation steps:
[( 99 - 329 ) ÷ 329] x 100 = -69.91%
Formula
Percentage change = [(99 - 329) / 329] x 100
Subtract the new number by the original number
99 - 329 = -230
-230 ÷ 329 = -0.6990881458966566
-0.6990881458966566 x 100 = -69.91%