311.57% is the change from 121 to 498
Calculation steps:
[( 498 - 121 ) ÷ 121] x 100 = 311.57%
Formula
Percentage change = [(498 - 121) / 121] x 100
Subtract the new number by the original number
498 - 121 = 377
377 ÷ 121 = 3.115702479338843
3.115702479338843 x 100 = 311.57%