-27.24% is the change from 624 to 454
Calculation steps:
[( 454 - 624 ) ÷ 624] x 100 = -27.24%
Formula
Percentage change = [(454 - 624) / 624] x 100
Subtract the new number by the original number
454 - 624 = -170
-170 ÷ 624 = -0.2724358974358974
-0.2724358974358974 x 100 = -27.24%