260.14% is the change from 138 to 497
Calculation steps:
[( 497 - 138 ) ÷ 138] x 100 = 260.14%
Formula
Percentage change = [(497 - 138) / 138] x 100
Subtract the new number by the original number
497 - 138 = 359
359 ÷ 138 = 2.601449275362319
2.601449275362319 x 100 = 260.14%