-8.95% is the change from 637 to 580
Calculation steps:
[( 580 - 637 ) ÷ 637] x 100 = -8.95%
Formula
Percentage change = [(580 - 637) / 637] x 100
Subtract the new number by the original number
580 - 637 = -57
-57 ÷ 637 = -0.08948194662480377
-0.08948194662480377 x 100 = -8.95%