123.7% is the change from 270 to 604
Calculation steps:
[( 604 - 270 ) ÷ 270] x 100 = 123.7%
Formula
Percentage change = [(604 - 270) / 270] x 100
Subtract the new number by the original number
604 - 270 = 334
334 ÷ 270 = 1.237037037037037
1.237037037037037 x 100 = 123.7%