-15.08% is the change from 504 to 428
Calculation steps:
[( 428 - 504 ) ÷ 504] x 100 = -15.08%
Formula
Percentage change = [(428 - 504) / 504] x 100
Subtract the new number by the original number
428 - 504 = -76
-76 ÷ 504 = -0.15079365079365079
-0.15079365079365079 x 100 = -15.08%