140.06% is the change from 342 to 821
Calculation steps:
[( 821 - 342 ) ÷ 342] x 100 = 140.06%
Formula
Percentage change = [(821 - 342) / 342] x 100
Subtract the new number by the original number
821 - 342 = 479
479 ÷ 342 = 1.4005847953216375
1.4005847953216375 x 100 = 140.06%