-15.66% is the change from 664 to 560
Calculation steps:
[( 560 - 664 ) ÷ 664] x 100 = -15.66%
Formula
Percentage change = [(560 - 664) / 664] x 100
Subtract the new number by the original number
560 - 664 = -104
-104 ÷ 664 = -0.1566265060240964
-0.1566265060240964 x 100 = -15.66%