-10.28% is the change from 506 to 454
Calculation steps:
[( 454 - 506 ) ÷ 506] x 100 = -10.28%
Formula
Percentage change = [(454 - 506) / 506] x 100
Subtract the new number by the original number
454 - 506 = -52
-52 ÷ 506 = -0.10276679841897234
-0.10276679841897234 x 100 = -10.28%