-1.57% is the change from 637 to 627
Calculation steps:
[( 627 - 637 ) ÷ 637] x 100 = -1.57%
Formula
Percentage change = [(627 - 637) / 637] x 100
Subtract the new number by the original number
627 - 637 = -10
-10 ÷ 637 = -0.015698587127158554
-0.015698587127158554 x 100 = -1.57%