-47.25% is the change from 491 to 259
Calculation steps:
[( 259 - 491 ) ÷ 491] x 100 = -47.25%
Formula
Percentage change = [(259 - 491) / 491] x 100
Subtract the new number by the original number
259 - 491 = -232
-232 ÷ 491 = -0.4725050916496945
-0.4725050916496945 x 100 = -47.25%