-10.36% is the change from 502 to 450
Calculation steps:
[( 450 - 502 ) ÷ 502] x 100 = -10.36%
Formula
Percentage change = [(450 - 502) / 502] x 100
Subtract the new number by the original number
450 - 502 = -52
-52 ÷ 502 = -0.10358565737051793
-0.10358565737051793 x 100 = -10.36%