-12.23% is the change from 638 to 560
Calculation steps:
[( 560 - 638 ) ÷ 638] x 100 = -12.23%
Formula
Percentage change = [(560 - 638) / 638] x 100
Subtract the new number by the original number
560 - 638 = -78
-78 ÷ 638 = -0.12225705329153605
-0.12225705329153605 x 100 = -12.23%