-12.6% is the change from 730 to 638
Calculation steps:
[( 638 - 730 ) ÷ 730] x 100 = -12.6%
Formula
Percentage change = [(638 - 730) / 730] x 100
Subtract the new number by the original number
638 - 730 = -92
-92 ÷ 730 = -0.12602739726027398
-0.12602739726027398 x 100 = -12.6%