-17.48% is the change from 515 to 425
Calculation steps:
[( 425 - 515 ) ÷ 515] x 100 = -17.48%
Formula
Percentage change = [(425 - 515) / 515] x 100
Subtract the new number by the original number
425 - 515 = -90
-90 ÷ 515 = -0.17475728155339806
-0.17475728155339806 x 100 = -17.48%