107.14% is the change from 42 to 87
Calculation steps:
[( 87 - 42 ) ÷ 42] x 100 = 107.14%
Formula
Percentage change = [(87 - 42) / 42] x 100
Subtract the new number by the original number
87 - 42 = 45
45 ÷ 42 = 1.0714285714285714
1.0714285714285714 x 100 = 107.14%