-12.19% is the change from 640 to 562
Calculation steps:
[( 562 - 640 ) ÷ 640] x 100 = -12.19%
Formula
Percentage change = [(562 - 640) / 640] x 100
Subtract the new number by the original number
562 - 640 = -78
-78 ÷ 640 = -0.121875
-0.121875 x 100 = -12.19%