-48.51% is the change from 505 to 260
Calculation steps:
[( 260 - 505 ) ÷ 505] x 100 = -48.51%
Formula
Percentage change = [(260 - 505) / 505] x 100
Subtract the new number by the original number
260 - 505 = -245
-245 ÷ 505 = -0.48514851485148514
-0.48514851485148514 x 100 = -48.51%