-52.86% is the change from 490 to 231
Calculation steps:
[( 231 - 490 ) ÷ 490] x 100 = -52.86%
Formula
Percentage change = [(231 - 490) / 490] x 100
Subtract the new number by the original number
231 - 490 = -259
-259 ÷ 490 = -0.5285714285714286
-0.5285714285714286 x 100 = -52.86%