-2.09% is the change from 526 to 515
Calculation steps:
[( 515 - 526 ) ÷ 526] x 100 = -2.09%
Formula
Percentage change = [(515 - 526) / 526] x 100
Subtract the new number by the original number
515 - 526 = -11
-11 ÷ 526 = -0.02091254752851711
-0.02091254752851711 x 100 = -2.09%