-51.22% is the change from 490 to 239
Calculation steps:
[( 239 - 490 ) ÷ 490] x 100 = -51.22%
Formula
Percentage change = [(239 - 490) / 490] x 100
Subtract the new number by the original number
239 - 490 = -251
-251 ÷ 490 = -0.5122448979591837
-0.5122448979591837 x 100 = -51.22%