-11.34% is the change from 644 to 571
Calculation steps:
[( 571 - 644 ) ÷ 644] x 100 = -11.34%
Formula
Percentage change = [(571 - 644) / 644] x 100
Subtract the new number by the original number
571 - 644 = -73
-73 ÷ 644 = -0.11335403726708075
-0.11335403726708075 x 100 = -11.34%