The original value is 35, and the new value is 70.
To find the percentage of change, we use the formula:
percentage change = ((new value - original value) / original value) * 100
Substituting the given values, we get:
percentage change = ((70 - 35) / 35) * 100
percentage change = 100%
Therefore, the percentage of change is 100% and it represents an increase.