363.64% is the change from 121 to 561
Calculation steps:
[( 561 - 121 ) ÷ 121] x 100 = 363.64%
Formula
Percentage change = [(561 - 121) / 121] x 100
Subtract the new number by the original number
561 - 121 = 440
440 ÷ 121 = 3.6363636363636362
3.6363636363636362 x 100 = 363.64%