-13.78% is the change from 450 to 388
Calculation steps:
[( 388 - 450 ) ÷ 450] x 100 = -13.78%
Formula
Percentage change = [(388 - 450) / 450] x 100
Subtract the new number by the original number
388 - 450 = -62
-62 ÷ 450 = -0.13777777777777778
-0.13777777777777778 x 100 = -13.78%