-3.23% is the change from 526 to 509
Calculation steps:
[( 509 - 526 ) ÷ 526] x 100 = -3.23%
Formula
Percentage change = [(509 - 526) / 526] x 100
Subtract the new number by the original number
509 - 526 = -17
-17 ÷ 526 = -0.03231939163498099
-0.03231939163498099 x 100 = -3.23%