486.43% is the change from 140 to 821
Calculation steps:
[( 821 - 140 ) ÷ 140] x 100 = 486.43%
Formula
Percentage change = [(821 - 140) / 140] x 100
Subtract the new number by the original number
821 - 140 = 681
681 ÷ 140 = 4.864285714285714
4.864285714285714 x 100 = 486.43%