30.24% is the change from 420 to 547
Calculation steps:
[( 547 - 420 ) ÷ 420] x 100 = 30.24%
Formula
Percentage change = [(547 - 420) / 420] x 100
Subtract the new number by the original number
547 - 420 = 127
127 ÷ 420 = 0.30238095238095236
0.30238095238095236 x 100 = 30.24%