-50.41% is the change from 490 to 243
Calculation steps:
[( 243 - 490 ) ÷ 490] x 100 = -50.41%
Formula
Percentage change = [(243 - 490) / 490] x 100
Subtract the new number by the original number
243 - 490 = -247
-247 ÷ 490 = -0.5040816326530613
-0.5040816326530613 x 100 = -50.41%