42.86% is the change from 7 to 10
Calculation steps:
[( 10 - 7 ) ÷ 7] x 100 = 42.86%
Formula
Percentage change = [(10 - 7) / 7] x 100
Subtract the new number by the original number
10 - 7 = 3
3 ÷ 7 = 0.42857142857142855
0.42857142857142855 x 100 = 42.86%