73.05% is the change from 397 to 687
Calculation steps:
[( 687 - 397 ) ÷ 397] x 100 = 73.05%
Formula
Percentage change = [(687 - 397) / 397] x 100
Subtract the new number by the original number
687 - 397 = 290
290 ÷ 397 = 0.7304785894206549
0.7304785894206549 x 100 = 73.05%