-11.22% is the change from 508 to 451
Calculation steps:
[( 451 - 508 ) ÷ 508] x 100 = -11.22%
Formula
Percentage change = [(451 - 508) / 508] x 100
Subtract the new number by the original number
451 - 508 = -57
-57 ÷ 508 = -0.11220472440944881
-0.11220472440944881 x 100 = -11.22%