-3.43% is the change from 641 to 619
Calculation steps:
[( 619 - 641 ) ÷ 641] x 100 = -3.43%
Formula
Percentage change = [(619 - 641) / 641] x 100
Subtract the new number by the original number
619 - 641 = -22
-22 ÷ 641 = -0.0343213728549142
-0.0343213728549142 x 100 = -3.43%