338.84% is the change from 121 to 531
Calculation steps:
[( 531 - 121 ) ÷ 121] x 100 = 338.84%
Formula
Percentage change = [(531 - 121) / 121] x 100
Subtract the new number by the original number
531 - 121 = 410
410 ÷ 121 = 3.3884297520661155
3.3884297520661155 x 100 = 338.84%