-15.7% is the change from 637 to 537
Calculation steps:
[( 537 - 637 ) ÷ 637] x 100 = -15.7%
Formula
Percentage change = [(537 - 637) / 637] x 100
Subtract the new number by the original number
537 - 637 = -100
-100 ÷ 637 = -0.15698587127158556
-0.15698587127158556 x 100 = -15.7%