53.28% is the change from 274 to 420
Calculation steps:
[( 420 - 274 ) ÷ 274] x 100 = 53.28%
Formula
Percentage change = [(420 - 274) / 274] x 100
Subtract the new number by the original number
420 - 274 = 146
146 ÷ 274 = 0.5328467153284672
0.5328467153284672 x 100 = 53.28%