250% is the change from 68 to 238
Calculation steps:
[( 238 - 68 ) ÷ 68] x 100 = 250%
Formula
Percentage change = [(238 - 68) / 68] x 100
Subtract the new number by the original number
238 - 68 = 170
170 ÷ 68 = 2.5
2.5 x 100 = 250%
Example