239.26% is the change from 242 to 821
Calculation steps:
[( 821 - 242 ) ÷ 242] x 100 = 239.26%
Formula
Percentage change = [(821 - 242) / 242] x 100
Subtract the new number by the original number
821 - 242 = 579
579 ÷ 242 = 2.3925619834710745
2.3925619834710745 x 100 = 239.26%