678.51% is the change from 121 to 942
Calculation steps:
[( 942 - 121 ) ÷ 121] x 100 = 678.51%
Formula
Percentage change = [(942 - 121) / 121] x 100
Subtract the new number by the original number
942 - 121 = 821
821 ÷ 121 = 6.785123966942149
6.785123966942149 x 100 = 678.51%