100%
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To find the percent of change, we need to calculate the absolute change and then divide it by the original value.
The absolute change is found by subtracting the initial value from the final value.
In this case, the initial value is 1000 cm and the final value is 2000 cm, so the absolute change is:
The percent of change is the absolute change divided by the original value, multiplied by 100.
- (1000 cm / 1000 cm) * 100 = 100%