263.04% is the change from 138 to 501
Calculation steps:
[( 501 - 138 ) ÷ 138] x 100 = 263.04%
Formula
Percentage change = [(501 - 138) / 138] x 100
Subtract the new number by the original number
501 - 138 = 363
363 ÷ 138 = 2.630434782608696
2.630434782608696 x 100 = 263.04%