78.57% is the change from 42 to 75
Calculation steps:
[( 75 - 42 ) ÷ 42] x 100 = 78.57%
Formula
Percentage change = [(75 - 42) / 42] x 100
Subtract the new number by the original number
75 - 42 = 33
33 ÷ 42 = 0.7857142857142857
0.7857142857142857 x 100 = 78.57%