-15.82% is the change from 670 to 564
Calculation steps:
[( 564 - 670 ) ÷ 670] x 100 = -15.82%
Formula
Percentage change = [(564 - 670) / 670] x 100
Subtract the new number by the original number
564 - 670 = -106
-106 ÷ 670 = -0.1582089552238806
-0.1582089552238806 x 100 = -15.82%