149.25% is the change from 201 to 501
Calculation steps:
[( 501 - 201 ) ÷ 201] x 100 = 149.25%
Formula
Percentage change = [(501 - 201) / 201] x 100
Subtract the new number by the original number
501 - 201 = 300
300 ÷ 201 = 1.492537313432836
1.492537313432836 x 100 = 149.25%