-9.32% is the change from 644 to 584
Calculation steps:
[( 584 - 644 ) ÷ 644] x 100 = -9.32%
Formula
Percentage change = [(584 - 644) / 644] x 100
Subtract the new number by the original number
584 - 644 = -60
-60 ÷ 644 = -0.09316770186335403
-0.09316770186335403 x 100 = -9.32%