70% is the change from 10 to 17
Calculation steps:
[( 17 - 10 ) ÷ 10] x 100 = 70%
Formula
Percentage change = [(17 - 10) / 10] x 100
Subtract the new number by the original number
17 - 10 = 7
7 ÷ 10 = 0.7
0.7 x 100 = 70%
Example