-14.91% is the change from 503 to 428
Calculation steps:
[( 428 - 503 ) ÷ 503] x 100 = -14.91%
Formula
Percentage change = [(428 - 503) / 503] x 100
Subtract the new number by the original number
428 - 503 = -75
-75 ÷ 503 = -0.14910536779324055
-0.14910536779324055 x 100 = -14.91%