300% is the change from 121 to 484
Calculation steps:
[( 484 - 121 ) ÷ 121] x 100 = 300%
Formula
Percentage change = [(484 - 121) / 121] x 100
Subtract the new number by the original number
484 - 121 = 363
363 ÷ 121 = 3
3 x 100 = 300%
Example