-6.44% is the change from 637 to 596
Calculation steps:
[( 596 - 637 ) ÷ 637] x 100 = -6.44%
Formula
Percentage change = [(596 - 637) / 637] x 100
Subtract the new number by the original number
596 - 637 = -41
-41 ÷ 637 = -0.06436420722135008
-0.06436420722135008 x 100 = -6.44%