7.85% is the change from 637 to 687
Calculation steps:
[( 687 - 637 ) ÷ 637] x 100 = 7.85%
Formula
Percentage change = [(687 - 637) / 637] x 100
Subtract the new number by the original number
687 - 637 = 50
50 ÷ 637 = 0.07849293563579278
0.07849293563579278 x 100 = 7.85%