-58.58% is the change from 239 to 99
Calculation steps:
[( 99 - 239 ) ÷ 239] x 100 = -58.58%
Formula
Percentage change = [(99 - 239) / 239] x 100
Subtract the new number by the original number
99 - 239 = -140
-140 ÷ 239 = -0.5857740585774058
-0.5857740585774058 x 100 = -58.58%