-1.9% is the change from 525 to 515
Calculation steps:
[( 515 - 525 ) ÷ 525] x 100 = -1.9%
Formula
Percentage change = [(515 - 525) / 525] x 100
Subtract the new number by the original number
515 - 525 = -10
-10 ÷ 525 = -0.01904761904761905
-0.01904761904761905 x 100 = -1.9%