-57.14% is the change from 637 to 273
Calculation steps:
[( 273 - 637 ) ÷ 637] x 100 = -57.14%
Formula
Percentage change = [(273 - 637) / 637] x 100
Subtract the new number by the original number
273 - 637 = -364
-364 ÷ 637 = -0.5714285714285714
-0.5714285714285714 x 100 = -57.14%