248.55% is the change from 138 to 481
Calculation steps:
[( 481 - 138 ) ÷ 138] x 100 = 248.55%
Formula
Percentage change = [(481 - 138) / 138] x 100
Subtract the new number by the original number
481 - 138 = 343
343 ÷ 138 = 2.4855072463768115
2.4855072463768115 x 100 = 248.55%