267.15% is the change from 137 to 503
Calculation steps:
[( 503 - 137 ) ÷ 137] x 100 = 267.15%
Formula
Percentage change = [(503 - 137) / 137] x 100
Subtract the new number by the original number
503 - 137 = 366
366 ÷ 137 = 2.6715328467153285
2.6715328467153285 x 100 = 267.15%