-24.59% is the change from 675 to 509
Calculation steps:
[( 509 - 675 ) ÷ 675] x 100 = -24.59%
Formula
Percentage change = [(509 - 675) / 675] x 100
Subtract the new number by the original number
509 - 675 = -166
-166 ÷ 675 = -0.24592592592592594
-0.24592592592592594 x 100 = -24.59%