-82.43% is the change from 239 to 42
Calculation steps:
[( 42 - 239 ) ÷ 239] x 100 = -82.43%
Formula
Percentage change = [(42 - 239) / 239] x 100
Subtract the new number by the original number
42 - 239 = -197
-197 ÷ 239 = -0.8242677824267782
-0.8242677824267782 x 100 = -82.43%