270.9% is the change from 134 to 497
Calculation steps:
[( 497 - 134 ) ÷ 134] x 100 = 270.9%
Formula
Percentage change = [(497 - 134) / 134] x 100
Subtract the new number by the original number
497 - 134 = 363
363 ÷ 134 = 2.708955223880597
2.708955223880597 x 100 = 270.9%