-48.81% is the change from 506 to 259
Calculation steps:
[( 259 - 506 ) ÷ 506] x 100 = -48.81%
Formula
Percentage change = [(259 - 506) / 506] x 100
Subtract the new number by the original number
259 - 506 = -247
-247 ÷ 506 = -0.4881422924901186
-0.4881422924901186 x 100 = -48.81%