54.21% is the change from 273 to 421
Calculation steps:
[( 421 - 273 ) ÷ 273] x 100 = 54.21%
Formula
Percentage change = [(421 - 273) / 273] x 100
Subtract the new number by the original number
421 - 273 = 148
148 ÷ 273 = 0.5421245421245421
0.5421245421245421 x 100 = 54.21%