-2.85% is the change from 526 to 511
Calculation steps:
[( 511 - 526 ) ÷ 526] x 100 = -2.85%
Formula
Percentage change = [(511 - 526) / 526] x 100
Subtract the new number by the original number
511 - 526 = -15
-15 ÷ 526 = -0.028517110266159697
-0.028517110266159697 x 100 = -2.85%