-13.57% is the change from 420 to 363
Calculation steps:
[( 363 - 420 ) ÷ 420] x 100 = -13.57%
Formula
Percentage change = [(363 - 420) / 420] x 100
Subtract the new number by the original number
363 - 420 = -57
-57 ÷ 420 = -0.1357142857142857
-0.1357142857142857 x 100 = -13.57%