-62.48% is the change from 637 to 239
Calculation steps:
[( 239 - 637 ) ÷ 637] x 100 = -62.48%
Formula
Percentage change = [(239 - 637) / 637] x 100
Subtract the new number by the original number
239 - 637 = -398
-398 ÷ 637 = -0.6248037676609105
-0.6248037676609105 x 100 = -62.48%