6.18% is the change from 647 to 687
Calculation steps:
[( 687 - 647 ) ÷ 647] x 100 = 6.18%
Formula
Percentage change = [(687 - 647) / 647] x 100
Subtract the new number by the original number
687 - 647 = 40
40 ÷ 647 = 0.061823802163833076
0.061823802163833076 x 100 = 6.18%