-62.79% is the change from 637 to 237
Calculation steps:
[( 237 - 637 ) ÷ 637] x 100 = -62.79%
Formula
Percentage change = [(237 - 637) / 637] x 100
Subtract the new number by the original number
237 - 637 = -400
-400 ÷ 637 = -0.6279434850863422
-0.6279434850863422 x 100 = -62.79%