-15.57% is the change from 610 to 515
Calculation steps:
[( 515 - 610 ) ÷ 610] x 100 = -15.57%
Formula
Percentage change = [(515 - 610) / 610] x 100
Subtract the new number by the original number
515 - 610 = -95
-95 ÷ 610 = -0.1557377049180328
-0.1557377049180328 x 100 = -15.57%