401% is the change from 100 to 501
Calculation steps:
[( 501 - 100 ) ÷ 100] x 100 = 401%
Formula
Percentage change = [(501 - 100) / 100] x 100
Subtract the new number by the original number
501 - 100 = 401
401 ÷ 100 = 4.01
4.01 x 100 = 401%
Example