-17.54% is the change from 610 to 503
Calculation steps:
[( 503 - 610 ) ÷ 610] x 100 = -17.54%
Formula
Percentage change = [(503 - 610) / 610] x 100
Subtract the new number by the original number
503 - 610 = -107
-107 ÷ 610 = -0.17540983606557378
-0.17540983606557378 x 100 = -17.54%