-48.92% is the change from 509 to 260
Calculation steps:
[( 260 - 509 ) ÷ 509] x 100 = -48.92%
Formula
Percentage change = [(260 - 509) / 509] x 100
Subtract the new number by the original number
260 - 509 = -249
-249 ÷ 509 = -0.48919449901768175
-0.48919449901768175 x 100 = -48.92%