314.05% is the change from 121 to 501
Calculation steps:
[( 501 - 121 ) ÷ 121] x 100 = 314.05%
Formula
Percentage change = [(501 - 121) / 121] x 100
Subtract the new number by the original number
501 - 121 = 380
380 ÷ 121 = 3.1404958677685952
3.1404958677685952 x 100 = 314.05%