-51.84% is the change from 490 to 236
Calculation steps:
[( 236 - 490 ) ÷ 490] x 100 = -51.84%
Formula
Percentage change = [(236 - 490) / 490] x 100
Subtract the new number by the original number
236 - 490 = -254
-254 ÷ 490 = -0.5183673469387755
-0.5183673469387755 x 100 = -51.84%