188.1% is the change from 42 to 121
Calculation steps:
[( 121 - 42 ) ÷ 42] x 100 = 188.1%
Formula
Percentage change = [(121 - 42) / 42] x 100
Subtract the new number by the original number
121 - 42 = 79
79 ÷ 42 = 1.880952380952381
1.880952380952381 x 100 = 188.1%