150% is the change from 42 to 105
Calculation steps:
[( 105 - 42 ) ÷ 42] x 100 = 150%
Formula
Percentage change = [(105 - 42) / 42] x 100
Subtract the new number by the original number
105 - 42 = 63
63 ÷ 42 = 1.5
1.5 x 100 = 150%
Example