170% is the change from 10 to 27
Calculation steps:
[( 27 - 10 ) ÷ 10] x 100 = 170%
Formula
Percentage change = [(27 - 10) / 10] x 100
Subtract the new number by the original number
27 - 10 = 17
17 ÷ 10 = 1.7
1.7 x 100 = 170%
Example