240% is the change from 70 to 238
Calculation steps:
[( 238 - 70 ) ÷ 70] x 100 = 240%
Formula
Percentage change = [(238 - 70) / 70] x 100
Subtract the new number by the original number
238 - 70 = 168
168 ÷ 70 = 2.4
2.4 x 100 = 240%
Example