230% is the change from 70 to 231
Calculation steps:
[( 231 - 70 ) ÷ 70] x 100 = 230%
Formula
Percentage change = [(231 - 70) / 70] x 100
Subtract the new number by the original number
231 - 70 = 161
161 ÷ 70 = 2.3
2.3 x 100 = 230%
Example