-17.14% is the change from 420 to 348
Calculation steps:
[( 348 - 420 ) ÷ 420] x 100 = -17.14%
Formula
Percentage change = [(348 - 420) / 420] x 100
Subtract the new number by the original number
348 - 420 = -72
-72 ÷ 420 = -0.17142857142857143
-0.17142857142857143 x 100 = -17.14%