-12.11% is the change from 454 to 399
Calculation steps:
[( 399 - 454 ) ÷ 454] x 100 = -12.11%
Formula
Percentage change = [(399 - 454) / 454] x 100
Subtract the new number by the original number
399 - 454 = -55
-55 ÷ 454 = -0.1211453744493392
-0.1211453744493392 x 100 = -12.11%