-9.05% is the change from 420 to 382
Calculation steps:
[( 382 - 420 ) ÷ 420] x 100 = -9.05%
Formula
Percentage change = [(382 - 420) / 420] x 100
Subtract the new number by the original number
382 - 420 = -38
-38 ÷ 420 = -0.09047619047619047
-0.09047619047619047 x 100 = -9.05%