-0.96% is the change from 520 to 515
Calculation steps:
[( 515 - 520 ) ÷ 520] x 100 = -0.96%
Formula
Percentage change = [(515 - 520) / 520] x 100
Subtract the new number by the original number
515 - 520 = -5
-5 ÷ 520 = -0.009615384615384616
-0.009615384615384616 x 100 = -0.96%