-93.56% is the change from 637 to 41
Calculation steps:
[( 41 - 637 ) ÷ 637] x 100 = -93.56%
Formula
Percentage change = [(41 - 637) / 637] x 100
Subtract the new number by the original number
41 - 637 = -596
-596 ÷ 637 = -0.9356357927786499
-0.9356357927786499 x 100 = -93.56%