150% is the change from 68 to 170
Calculation steps:
[( 170 - 68 ) ÷ 68] x 100 = 150%
Formula
Percentage change = [(170 - 68) / 68] x 100
Subtract the new number by the original number
170 - 68 = 102
102 ÷ 68 = 1.5
1.5 x 100 = 150%
Example