-7.06% is the change from 666 to 619
Calculation steps:
[( 619 - 666 ) ÷ 666] x 100 = -7.06%
Formula
Percentage change = [(619 - 666) / 666] x 100
Subtract the new number by the original number
619 - 666 = -47
-47 ÷ 666 = -0.07057057057057058
-0.07057057057057058 x 100 = -7.06%