345.65% is the change from 138 to 615
Calculation steps:
[( 615 - 138 ) ÷ 138] x 100 = 345.65%
Formula
Percentage change = [(615 - 138) / 138] x 100
Subtract the new number by the original number
615 - 138 = 477
477 ÷ 138 = 3.4565217391304346
3.4565217391304346 x 100 = 345.65%