-92.62% is the change from 637 to 47
Calculation steps:
[( 47 - 637 ) ÷ 637] x 100 = -92.62%
Formula
Percentage change = [(47 - 637) / 637] x 100
Subtract the new number by the original number
47 - 637 = -590
-590 ÷ 637 = -0.9262166405023547
-0.9262166405023547 x 100 = -92.62%