-1.41% is the change from 637 to 628
Calculation steps:
[( 628 - 637 ) ÷ 637] x 100 = -1.41%
Formula
Percentage change = [(628 - 637) / 637] x 100
Subtract the new number by the original number
628 - 637 = -9
-9 ÷ 637 = -0.0141287284144427
-0.0141287284144427 x 100 = -1.41%